{"id":11306,"date":"2024-04-22T02:15:59","date_gmt":"2024-04-22T02:15:59","guid":{"rendered":"https:\/\/science-hub.click\/%E4%B8%89%E8%A7%92%E5%BD%A2%E3%82%92%E8%A7%A3%E3%81%8F-%E5%AE%9A%E7%BE%A9\/"},"modified":"2024-04-22T02:15:59","modified_gmt":"2024-04-22T02:15:59","slug":"%E4%B8%89%E8%A7%92%E5%BD%A2%E3%82%92%E8%A7%A3%E3%81%8F-%E5%AE%9A%E7%BE%A9","status":"publish","type":"post","link":"https:\/\/science-hub.click\/?p=11306","title":{"rendered":"\u4e09\u89d2\u5f62\u3092\u89e3\u304f &#8211; \u5b9a\u7fa9"},"content":{"rendered":"<div><div><p>\u5e7e\u4f55\u5b66\u3067\u306f\u3001<strong>\u4e09\u89d2\u5f62\u3092\u89e3\u304f\u3053\u3068\u306f<\/strong>\u3001\u4e09\u89d2\u5f62\u306e\u3055\u307e\u3056\u307e\u306a\u8981\u7d20 (\u8fba\u306e\u9577\u3055\u3001\u89d2\u5ea6\u306e\u6e2c\u5b9a\u5024\u3001\u9762\u7a4d) \u3092\u4ed6\u306e\u8981\u7d20\u304b\u3089\u6c7a\u5b9a\u3059\u308b\u3053\u3068\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002\u6b74\u53f2\u7684\u306b\u306f\u3001\u4e09\u89d2\u5f62\u306e\u89e3\u6c7a\u304c\u52d5\u6a5f\u4ed8\u3051\u3089\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p><ul><li><span><a href=\"https:\/\/science-hub.click\/?p=84161\">\u5730\u56f3\u4f5c\u6210<\/a><\/span>\u306b\u304a\u3044\u3066\u3001\u4e09\u89d2\u6e2c\u91cf\u306b\u3088\u3063\u3066\u8ddd\u96e2\u3092\u6e2c\u5b9a\u3059\u308b\u305f\u3081\u3002<\/li><li>\u30ae\u30ea\u30b7\u30a2\u4eba\u306e\u9593\u3067<span><a href=\"https:\/\/science-hub.click\/?p=28464\">\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u5e7e\u4f55\u5b66\u304c\u7814\u7a76\u3055<\/a><\/span>\u308c\u3001\u6570\u591a\u304f\u306e<span><a href=\"https:\/\/science-hub.click\/?p=976\">\u5e7e\u4f55\u5b66<\/a><\/span>\u554f\u984c\u304c\u89e3\u6c7a\u3055\u308c\u307e\u3057\u305f\u3002<\/li><li><span><a href=\"https:\/\/science-hub.click\/?p=35368\">\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3<\/a><\/span>\u3067\u306f\u3001<span><a href=\"https:\/\/science-hub.click\/?p=43578\">\u30dd\u30a4\u30f3\u30c8<\/a><\/span>\u7528\u306b\u3001\u5730\u7403\u5ea7\u6a19\u3068\u5929\u6587\u5ea7\u6a19 (\u7403\u9762\u4e09\u89d2\u6cd5) \u306e\u8a08\u7b97\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/li><\/ul><p>\u4eca\u65e5\u3001\u4e09\u89d2\u5f62\u306e\u89e3\u50cf\u5ea6\u306f\u3001<span><a href=\"https:\/\/science-hub.click\/?p=15638\">\u4e09\u89d2\u6e2c\u91cf<\/a><\/span>(\u5efa\u7bc9\u3001\u5730\u7c4d\u6e2c\u91cf\u3001\u4e21\u773c\u8996) \u304a\u3088\u3073\u3088\u308a\u4e00\u822c\u7684\u306b\u306f<span><a href=\"https:\/\/science-hub.click\/?p=81733\">\u4e09\u89d2\u6cd5<\/a><\/span>(\u5929\u6587\u5b66\u3001\u5730\u56f3\u4f5c\u6210) \u306b\u95a2\u9023\u3059\u308b<span><a href=\"https:\/\/science-hub.click\/?p=71097\">\u591a\u6570<\/a><\/span>\u306e\u554f\u984c\u3067\u5f15\u304d\u7d9a\u304d\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p><p>\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u5e7e\u4f55\u5b66\u3067\u306f\u3001<span><a href=\"https:\/\/science-hub.click\/?p=83821\">\u4e09\u89d2\u5f62<\/a><\/span>\u306e\u89e3\u6c7a\u306b\u306f\u5c11\u306a\u304f\u3068\u3082 1 \u3064\u306e\u8fba\u3092\u542b\u3080 3 \u3064\u306e\u8981\u7d20\u306e<span><a href=\"https:\/\/science-hub.click\/?p=25552\">\u30c7\u30fc\u30bf<\/a><\/span>\u304c\u5fc5\u8981\u5341\u5206\u3067\u3042\u308a\u3001\u89e3\u6c7a\u306e 1 \u3064\u306e\u30b1\u30fc\u30b9\u3067\u306f 2 \u3064\u306e\u89e3\u304c\u8a31\u5bb9\u3055\u308c\u307e\u3059\u3002\u7403\u9762\u307e\u305f\u306f\u53cc\u66f2\u9762\u306e\u5e7e\u4f55\u5b66\u3067\u306f\u30013 \u3064\u306e\u89d2\u5ea6\u306e<span>\u30c7\u30fc\u30bf<\/span>\u3067\u3082\u5341\u5206\u3067\u3059\u3002\u3053\u306e\u89e3\u6c7a\u7b56\u306b\u306f\u3001\u4e09\u89d2\u6cd5\u3001\u7279\u306b\u30a2\u30eb\u30fb\u30ab\u30b7\u306e<span>\u5b9a\u7406<\/span>\u3001<span><a href=\"https:\/\/science-hub.click\/?p=68411\">\u6b63\u5f26\u306e\u6cd5\u5247<\/a><\/span>\u3001<span><a href=\"https:\/\/science-hub.click\/?p=71040\">\u63a5\u7dda\u306e\u6cd5\u5247<\/a><\/span>\u3001\u89d2\u5ea6\u306e\u5408\u8a08\u306a\u3069\u3001\u4e09\u89d2\u5f62\u306b\u304a\u3051\u308b\u7279\u5b9a\u306e\u53e4\u5178\u7684\u306a\u95a2\u4fc2\u304c\u95a2\u4fc2\u3057\u307e\u3059\u3002<\/p><h2><span>\u6b74\u53f2<\/span><\/h2><p><i>\u66f8\u304f\u3053\u3068\u3002<\/i><\/p><figure class=\"wp-block-image size-large is-style-default\">\n<img decoding=\"async\" alt=\"\u4e09\u89d2\u5f62\u3092\u89e3\u304f - \u5b9a\u7fa9\" class=\"aligncenter\" onerror=\"this.style.display=none;\" src=\"https:\/\/img.youtube.com\/vi\/kkTP-jTABEg\/0.jpg\" style=\"width:100%;\"\/><\/figure><h2><span>\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u5e7e\u4f55\u5b66\u306b\u304a\u3051\u308b\u89e3\u6c7a\u306e\u4e8b\u4f8b<\/span><\/h2><p>\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u5e7e\u4f55\u5b66\u3067\u4e09\u89d2\u5f62\u3092\u89e3\u304f\u306b\u306f\u3001\u4e09\u89d2\u5f62\u306e\u8981\u7d20\u9593\u306e\u7279\u5b9a\u306e\u6570\u306e\u95a2\u4fc2\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u6700\u3082\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u306e\u306f\u3001<\/p><ul><li>\u30a2\u30eb\u30fb\u30ab\u30b7\u306e\u5b9a\u7406\u3002<\/li><li>\u30d8\u30ed\u30f3\u306e\u516c\u5f0f;<\/li><li>\u6b63\u5f26\u306e\u6cd5\u5247\u3002<\/li><li>\u63a5\u7dda\u306e\u6cd5\u5247\u3002<\/li><li>\u4e09\u89d2\u5f62\u306e\u89d2\u5ea6\u306e\u5408\u8a08\u306f \u03c0<span>\u30e9\u30b8\u30a2\u30f3<\/span>\u307e\u305f\u306f 180\u00b0\u3001<\/li><\/ul><p>\u305f\u3060\u3057\u3001\u4ed6\u306e\u95a2\u4fc2\u3092\u4f7f\u7528\u3057\u3066\u89e3\u6c7a\u7b56\u306b\u5230\u9054\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p><p>\u4ee5\u4e0b\u306b\u30013 \u3064\u306e\u89d2\u5ea6\u3068 3 \u3064\u306e\u8fba\u306e\u3046\u3061\u3001\u65e2\u77e5\u306e 3 \u3064\u306e\u8981\u7d20\u306b\u5fdc\u3058\u3066\u7570\u306a\u308b\u30b1\u30fc\u30b9\u3092\u793a\u3057\u307e\u3059\u3002\u672a\u77e5\u306e\u8fba\u3084\u89d2\u5ea6\u3001\u304a\u3088\u3073\u9762\u7a4d<i>S<\/i>\u306b\u3064\u3044\u3066\u306f\u3001\u89e3\u6790\u516c\u5f0f\u304c\u4e0e\u3048\u3089\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u3001\u305d\u306e\u307e\u307e\u3067\u306f\u3001\u300c\u30d8\u30a2\u30d4\u30f3\u300d\u4e09\u89d2\u5f62\u3001\u3064\u307e\u308a\u3001\u8fba\u306e 1 \u3064\u304c\u4ed6\u306e\u8fba\u306b\u6bd4\u3079\u3066\u5c0f\u3055\u3044\u5834\u5408\u3084\u3001\u300c\u307b\u307c\u76f4\u89d2\u306e\u300d\u4e09\u89d2\u5f62\u3067\u306f\u91cd\u5927\u306a\u8aa4\u5dee\u304c\u751f\u3058\u308b\u305f\u3081\u3001<span>\u6570\u5024<\/span>\u6c7a\u5b9a\u306b\u9069\u5408\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u89d2\u5ea6\u306e 1 \u3064\u306f\u7d04 90\u00b0\u3067\u3059\u3002<\/p><h3><span>\u4e09\u9762<\/span><\/h3><p>3 \u3064\u306e\u8fba<i>a<\/i> \u3001 <i>b<\/i> \u3001 <i>c<\/i>\u304c\u65e2\u77e5\u3067\u3042\u308b\u4e09\u89d2\u5f62\u3092\u8003\u3048\u307e\u3059\u3002\u89d2\u5ea6\u306f Al-Kash \u306e\u5b9a\u7406\u304b\u3089\u3001\u9762\u7a4d\u306f H\u00e9ron \u306e\u516c\u5f0f\u304b\u3089\u63a8\u5b9a\u3055\u308c\u307e\u3059\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {\\alpha = \\arccos\\left( \\frac{b^2+c^2-a^2}{2bc} \\right)} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {\\beta  = \\arccos\\left( \\frac{c^2+a^2-b^2}{2ca} \\right)} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {\\gamma = \\arccos\\left( \\frac{a^2+b^2-c^2}{2ab} \\right)} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {S      =  \\sqrt{p(p-a)(p-b)(p-c)}} $$<\/div> \u3001 \u3068<div class=\"math-formual notranslate\">$$ {p=\\frac12(a+b+c)} $$<\/div><\/li><\/ul><h3><span><span><a href=\"https:\/\/science-hub.click\/?p=108487\">\u89d2\u5ea6<\/a><\/span>\u3068\u96a3\u63a5\u3059\u308b 2 \u3064\u306e\u8fba<\/span><\/h3><p>\u89d2\u5ea6<i>\u03b3<\/i>\u304c\u65e2\u77e5\u306e\u4e09\u89d2\u5f62\u3068\u3001\u96a3\u63a5\u3059\u308b 2 \u3064\u306e\u8fba<i>a<\/i>\u304a\u3088\u3073<i>b<\/i>\u3092\u8003\u3048\u307e\u3059\u3002\u6700\u5f8c\u306e\u8fba\u306f\u3001Al-Kash \u306e\u5b9a\u7406\u3001\u63a5\u7dda\u306e\u6cd5\u5247\u3068<i>\u03c0<\/i>\u306e\u88dc\u6570\u306b\u3088\u308b 2 \u3064\u306e\u4e0d\u8db3\u89d2\u5ea6\u3001\u304a\u3088\u3073\u30d9\u30af\u30c8\u30eb\u7a4d\u516c\u5f0f\u306b\u3088\u308b\u9762\u7a4d\u306e\u304a\u304b\u3052\u3067\u5f97\u3089\u308c\u307e\u3059\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {c      = \\sqrt{a^2+b^2-2ab\\cos\\gamma}} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {\\alpha = \\frac\\pi2 &#8211; \\frac\\gamma2 + \\arctan\\left(\\frac{a-b}{a+b}\\cot\\frac\\gamma2\\right)} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {\\beta  = \\frac\\pi2 &#8211; \\frac\\gamma2 &#8211; \\arctan\\left(\\frac{a-b}{a+b}\\cot\\frac\\gamma2\\right)} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {S      = \\frac12 ab\\sin\\gamma} $$<\/div><\/li><\/ul><h3><span>\u89d2\u5ea6\u3001<span>\u53cd\u5bfe<\/span>\u5074\u3068\u96a3\u63a5\u5074<\/span><\/h3><p>\u89d2\u5ea6<i>\u03b2<\/i>\u304c\u65e2\u77e5\u306e\u4e09\u89d2\u5f62\u3001\u304a\u3088\u3073\u3053\u306e\u89d2\u5ea6\u306e\u96a3\u63a5\u3059\u308b\u8fba<i>c<\/i>\u3068\u53cd\u5bfe\u5074\u306e\u8fba<i>b<\/i>\u3092\u8003\u3048\u307e\u3059\u3002 2 \u756a\u76ee\u306e\u89d2\u5ea6<i>\u03b3<\/i>\u306f<span><a href=\"https:\/\/science-hub.click\/?p=18862\">\u30b5\u30a4\u30f3<\/a><\/span>\u306e\u6cd5\u5247\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u3001\u6700\u5f8c\u306e\u89d2\u5ea6<i>\u03b1 \u306f<\/i><i>\u03c0<\/i>\u306e\u88dc\u6570\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u3001\u6700\u5f8c\u306e\u8fba\u306f\u30b5\u30a4\u30f3\u306e\u6cd5\u5247\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u307e\u3059\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {\\gamma = \\arcsin \\left(\\frac{c\\sin\\beta}b\\right)} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {\\alpha = \\pi-\\beta-\\arcsin\\left(\\frac{c\\sin\\beta}b\\right)} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {a      = \\sqrt{b^2-c^2\\sin^2\\beta}+c\\cos\\beta} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {S = \\frac 12c\\left(\\sqrt{b^2-c^2\\sin^2\\beta}+c\\cos\\beta\\right)\\sin\\beta} $$<\/div><\/li><\/ul><p> <i>\u03b2<\/i>\u304c\u92ed\u89d2\u3067<i>b<\/i> &lt; <i>c<\/i>\u306e\u5834\u5408\u3001 <span><a href=\"https:\/\/science-hub.click\/?p=68283\">2 \u756a\u76ee\u306e<\/a><\/span>\u89e3\u304c\u5b58\u5728\u3057\u307e\u3059\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {\\gamma = \\pi-\\arcsin\\left(\\frac{c\\sin\\beta}b\\right)} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {\\alpha = -\\beta + \\arcsin\\left(\\frac{c\\sin\\beta}b\\right)} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {a      = c\\cos\\beta-\\sqrt{b^2-c^2\\sin^2\\beta}} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {S = \\frac 12 c\\left(\\sqrt{b^2-c^2\\sin^2\\beta}-c\\cos\\beta\\right)\\sin\\beta} $$<\/div><\/li><\/ul><p>\u3059\u3079\u3066\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u5024\u306b\u5bfe\u3057\u3066\u89e3\u6c7a\u304c\u53ef\u80fd\u3067\u3042\u308b\u308f\u3051\u3067\u306f\u306a\u304f\u3001\u6b21\u306e\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <\/p><dl><dd><div class=\"math-formual notranslate\">$$ {b  width=} $$<\/div> c \\sin\\beta\\,&#8221; &gt;\u3002<\/dd><\/dl><h3> <span>2\u3064\u306e\u89d2\u5ea6\u3068\u5171\u901a\u306e\u5074\u9762<\/span><\/h3><p>\u4e00\u8fba<i>c<\/i>\u3068\u305d\u306e\u5883\u754c\u3068\u306a\u308b 2 \u3064\u306e\u89d2<i>\u03b1<\/i>\u3068<i>\u03b2<\/i>\u304c\u65e2\u77e5\u3067\u3042\u308b\u4e09\u89d2\u5f62\u3092\u8003\u3048\u307e\u3059\u3002\u6700\u5f8c\u306e\u89d2\u5ea6\u306f<i>\u03c0<\/i>\u306e\u88dc\u6570\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u3001\u4ed6\u306e 2 \u3064\u306e\u8fba\u306f\u6b63\u5f26\u306e\u6cd5\u5247\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u307e\u3059\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {a  = \\frac {c\\sin\\alpha}{\\sin(\\alpha+\\beta)}} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {b  = \\frac {c\\sin\\beta}{ \\sin(\\alpha+\\beta)}} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {\\gamma = \\pi-\\alpha-\\beta\\,} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {S  = \\frac12 c^2 \\, \\frac{\\sin\\alpha\\sin\\beta}{\\sin(\\alpha+\\beta)}} $$<\/div><\/li><\/ul><h3> <span>2 \u3064\u306e\u89d2\u5ea6\u3068\u975e\u5171\u901a\u306e\u5074\u9762<\/span><\/h3><p>2 \u3064\u306e\u89d2\u5ea6<i>\u03b1<\/i>\u3068<i>\u03b2<\/i>\u304c\u65e2\u77e5\u3067\u3042\u308b\u4e09\u89d2\u5f62\u3068\u3001\u3053\u308c\u3089 2 \u3064\u306e\u89d2\u5ea6\u306b\u5171\u901a\u3067\u306f\u306a\u3044\u8fba<i>a<\/i>\u3092\u8003\u3048\u307e\u3059\u3002\u6700\u5f8c\u306e\u89d2\u5ea6\u306f<i>\u03c0<\/i>\u306e\u88dc\u6570\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u3001\u4ed6\u306e 2 \u3064\u306e\u8fba\u306f\u6b63\u5f26\u306e\u6cd5\u5247\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u307e\u3059\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {b = \\frac{a\\sin\\beta}{\\sin\\alpha}} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {c = \\frac{a\\sin(\\alpha+\\beta)}{\\sin\\alpha}} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {\\gamma = \\pi-\\alpha-\\beta\\,} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {S = \\frac12 a^2 \\, \\frac{\\sin(\\alpha+\\beta)\\sin\\beta}{\\sin\\alpha}} $$<\/div><\/li><\/ul><h2><span>\u7403\u9762\u5e7e\u4f55\u5b66\u306b\u304a\u3051\u308b\u89e3\u50cf\u5ea6\u306e\u4f8b<\/span><\/h2><p>\u7403\u9762\u5e7e\u4f55\u5b66 (\u975e\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u5e7e\u4f55\u5b66) \u3067\u306e\u4e09\u89d2\u5f62\u306e\u89e3\u304d\u65b9\u306f\u3001\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u306e\u5834\u5408\u3068\u306f\u5c11\u3057<span><a href=\"https:\/\/science-hub.click\/?p=28052\">\u7570\u306a\u308a\u307e\u3059<\/a><\/span>\u3002\u30b5\u30a4\u30f3\u306e\u6cd5\u5247\u3067\u306f\u8fba\u3092\u660e\u78ba\u306b\u53d6\u5f97\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u305a\u3001\u6b63\u5f26\u306e\u307f\u3092\u53d6\u5f97\u3067\u304d\u308b\u304b\u3089\u3067\u3059\u3002\u3055\u3089\u306b\u3001\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u5e73\u9762\u306e\u4e09\u89d2\u5f62\u3068\u306f\u7570\u306a\u308a\u30013 \u3064\u306e\u89d2\u5ea6\u304c\u65e2\u77e5\u306e\u7403\u9762\u4e09\u89d2\u5f62\u306f\u53ef\u6eb6\u3067\u3042\u308a\u3001\u305d\u306e\u89e3\u306f\u4e00\u610f\u3067\u3059\u3002<\/p><p>\u7403\u9762\u4e09\u89d2\u5f62\u3092\u89e3\u304f\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u516c\u5f0f\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p><ul><li>\u30a2\u30eb\u30fb\u30ab\u30b7\u306e\u5b9a\u7406\u306e\u4e00\u822c\u5316\uff08\u89d2\u5ea6\u3068\u8fba\u306b\u95a2\u3059\u308b\u5909\u5f62\uff09\u3002<\/li><li>\u30db\u30a4\u30ea\u30a8\u306e\u5b9a\u7406\u3002<\/li><li>\u30cd\u30a4\u30d4\u30a2\u306e\u985e\u63a8\u3002<\/li><li>\u4e09\u89d2\u5f62\u306e\u89d2\u5ea6\u306e\u5408\u8a08\u306f<i>\u03c0<\/i>\u306b\u8d85\u904e<i>E<\/i> (= <i>S<\/i> \/ <i>R<\/i> \u00b2) \u3092\u52a0\u3048\u305f\u3082\u306e\u3067\u3059\u3002<\/li><\/ul><h3><span><span>\u4e09\u9762<\/span><\/span><\/h3><p>3 \u3064\u306e\u8fba<i>a<\/i> \u3001 <i>b<\/i> \u3001 <i>c<\/i>\u304c\u65e2\u77e5\u306e\u4e09\u89d2\u5f62\u3067\u306f\u3001\u89d2\u5ea6\u306f Al-Kash \u306e\u5b9a\u7406\u306e<span><a href=\"https:\/\/science-hub.click\/?p=7924\">\u4e00\u822c\u5316<\/a><\/span>\u306b\u3088\u3063\u3066\u53d6\u5f97\u3055\u308c\u3001\u9762\u7a4d\u306f l&#8217;Huilier \u306e\u5b9a\u7406\u306b\u3088\u3063\u3066\u53d6\u5f97\u3055\u308c\u307e\u3059\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {\\alpha = \\arccos\\left(\\frac{\\cos a-\\cos b\\cos c}{\\sin b\\sin c}\\right)} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {\\beta  = \\arccos\\left(\\frac{\\cos b-\\cos c\\cos a}{\\sin c\\sin a}\\right)} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {\\gamma = \\arccos\\left(\\frac{\\cos c-\\cos a\\cos b}{\\sin a\\sin b}\\right)} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {E      = 4\\arctan\\sqrt{\\tan\\left(\\frac{p}2\\right) \\tan\\left(\\frac{p-a}2\\right) \\tan\\left(\\frac{p-b}2\\right) \\tan\\left(\\frac{p-c}2\\right)}} $$<\/div>\u307e\u305f\u306f<div class=\"math-formual notranslate\">$$ {p = \\frac12(a+b+c)} $$<\/div> \u3002<\/li><\/ul><h3><span><span>\u89d2\u5ea6\u3068\u96a3\u63a5\u3059\u308b 2 \u3064\u306e\u8fba<\/span><\/span><\/h3><p>2 \u3064\u306e\u8fba<i>a<\/i>\u3068<i>b<\/i>\u304a\u3088\u3073\u305d\u308c\u3089\u304c\u5f62\u6210\u3059\u308b\u89d2\u5ea6<i>\u03b3<\/i>\u304c\u65e2\u77e5\u306e\u4e09\u89d2\u5f62\u3067\u306f\u3001\u6700\u5f8c\u306e\u8fba\u306f\u4e00\u822c\u5316\u3055\u308c\u305f Al-Kash \u5b9a\u7406\u306b\u3088\u3063\u3066\u53d6\u5f97\u3055\u308c\u3001\u6b8b\u308a\u306e 2 \u3064\u306e\u89d2\u306f Napier \u985e\u63a8\u306b\u3088\u3063\u3066\u53d6\u5f97\u3055\u308c\u307e\u3059\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {c = \\arccos \\left(\\cos a\\cos b + \\sin a\\sin b\\cos\\gamma \\right)} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {\\alpha = \\arctan\\left\\{\\frac{2\\sin a}{\\tan(\\gamma\/2) \\sin (b+a) + \\cot(\\gamma\/2)\\sin(b-a)}\\right\\}} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {\\beta  = \\arctan\\left\\{\\frac{2\\sin b}{\\tan(\\gamma\/2) \\sin (a+b) + \\cot(\\gamma\/2)\\sin(a-b) }\\right\\}} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {E = \\gamma + 2\\arctan\\left\\{\\cot\\left(\\frac\\gamma2\\right)\\frac{\\cos\\left(\\frac12(a-b)\\right)}{\\cos\\left(\\frac12(a+b)\\right)}\\right\\} &#8211; \\pi} $$<\/div> \u3002<\/li><\/ul><h3><span><span>\u89d2\u5ea6\u3001\u53cd\u5bfe\u5074\u3068\u96a3\u63a5\u5074<\/span><\/span><\/h3><p>\u89d2\u5ea6<i>\u03b2<\/i> \u3001\u96a3\u63a5\u3059\u308b\u8fba<i>c<\/i>\u304a\u3088\u3073\u53cd\u5bfe\u5074\u306e\u8fba<i>b<\/i>\u304c\u65e2\u77e5\u3067\u3042\u308b\u4e09\u89d2\u5f62\u3092\u8003\u3048\u307e\u3059\u3002\u89d2\u5ea6<i>\u03b3 \u306f<\/i>\u6b63\u5f26\u306e\u6cd5\u5247\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u3001\u6b8b\u308a\u306e\u8981\u7d20\u306f\u30cd\u30a4\u30d4\u30a2\u306e\u985e\u63a8\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u307e\u3059\u3002\u89e3\u6c7a\u7b56\u304c\u3042\u308b\u306e\u306f\u6b21\u306e\u5834\u5408\u306e\u307f\u3067\u3059<\/p><dl><dd><div class=\"math-formual notranslate\">$$ {b  width=} $$<\/div> \\arcsin (\\sin c\\,\\sin\\beta)\\,&#8221; &gt;\u3002<\/dd><\/dl><p>\u305d\u308c\u3067<\/p><ul><li><div class=\"math-formual notranslate\">$$ {\\gamma = \\arcsin \\left(\\frac{\\sin c\\,\\sin\\beta}{\\sin b}\\right)} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {a      = 2\\arctan \\left\\{ \\tan\\left(\\frac12(b-c)\\right) \\frac{\\sin \\left(\\frac12(\\beta+\\gamma)\\right)}{\\sin\\left(\\frac12(\\beta-\\gamma)\\right)} \\right\\}} $$<\/div> \u3001<\/li><li> \u3002 <\/li><li><div class=\"math-formual notranslate\">$$ {E      = \\alpha+\\beta+\\gamma-\\pi\\,} $$<\/div><\/li><\/ul><p> <i>b<\/i> &gt; <i>c<\/i>\u3067<i>\u03b3<\/i>\u304c\u92ed\u3044\u5834\u5408\u306b\u306f\u3001\u5225\u306e\u89e3\u304c\u5b58\u5728\u3057\u307e\u3059\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {\\gamma = \\pi &#8211; \\arcsin \\left(\\frac{\\sin c\\,\\sin\\beta}{\\sin b}\\right)} $$<\/div> \u3001\u306a\u3069\u3002<\/li><\/ul><h3> <span>2\u3064\u306e\u89d2\u5ea6\u3068\u5171\u901a\u306e\u5074\u9762<\/span><\/h3><p>2 \u3064\u306e\u89d2\u5ea6<i>\u03b1<\/i>\u304a\u3088\u3073<i>\u03b2<\/i>\u3068\u3001\u3053\u308c\u3089\u306e\u89d2\u5ea6\u306b\u5171\u901a\u3059\u308b\u8fba<i>c<\/i>\u304c\u65e2\u77e5\u306e\u4e09\u89d2\u5f62\u3067\u306f\u3001\u6700\u5f8c\u306e\u89d2\u5ea6\u306f al-Kash \u306e\u516c\u5f0f\u306b\u3088\u3063\u3066\u53d6\u5f97\u3055\u308c\u3001\u6700\u5f8c\u306e 2 \u3064\u306e\u8fba\u306f Napier \u306e\u985e\u63a8\u306b\u3088\u3063\u3066\u53d6\u5f97\u3055\u308c\u307e\u3059\u3002\u6b20\u843d\u3057\u3066\u3044\u308b\u89d2\u5ea6\u3068\u8fba\u306e\u5f0f\u306f\u3001\u76f8\u88dc\u89e3\u50cf\u5ea6\u306e\u5834\u5408 (\u89d2\u5ea6\u3068\u96a3\u63a5\u3059\u308b 2 \u3064\u306e\u8fba\u304c\u65e2\u77e5\u3067\u3042\u308b) \u306e\u5f0f\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {\\gamma = \\arccos(\\sin\\alpha\\sin\\beta\\cos c -\\cos\\alpha\\cos\\beta)\\,} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {a = \\arctan\\left\\{\\frac{2\\sin\\alpha}{\\cot(c\/2) \\sin(\\beta+\\alpha) + \\tan(c\/2) \\sin(\\beta-\\alpha)}\\right\\}} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {b = \\arctan\\left\\{\\frac{2\\sin\\beta} {\\cot(c\/2) \\sin(\\alpha+\\beta) + \\tan(c\/2)\\sin(\\alpha-\\beta)}\\right\\}} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {E = \\alpha + \\beta + \\arccos(\\sin\\alpha\\sin\\beta\\cos c-\\cos\\alpha\\cos\\beta) &#8211; \\pi\\,} $$<\/div> \u3002<\/li><\/ul><h3> <span>2 \u3064\u306e\u89d2\u5ea6\u3068\u975e\u5171\u901a\u306e\u5074\u9762<\/span><\/h3><p>2 \u3064\u306e\u89d2\u5ea6<i>\u03b1<\/i>\u3068<i>\u03b2<\/i>\u304c\u65e2\u77e5\u3067\u3042\u308b\u4e09\u89d2\u5f62\u3068\u3001\u3053\u308c\u3089\u306e\u89d2\u5ea6\u306e 1 \u3064\u3068\u53cd\u5bfe\u5074\u306e\u8fba<i>a<\/i>\u3092\u8003\u3048\u307e\u3059\u3002 <i>b<\/i>\u9762\u306f\u6b63\u5f26\u306e\u6cd5\u5247\u306b\u3088\u3063\u3066\u6c42\u3081\u3089\u308c\u3001\u6b8b\u308a\u306e\u8981\u7d20\u306f\u30cd\u30a4\u30d4\u30a2\u306e\u985e\u63a8\u306b\u3088\u3063\u3066\u6c42\u3081\u3089\u308c\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u65b9\u7a0b\u5f0f\u3068\u76f8\u88dc\u89e3\u50cf\u5ea6 (\u89d2\u5ea6\u3001\u53cd\u5bfe\u5074\u3068\u96a3\u63a5\u5074) \u306e\u5834\u5408\u306e\u985e\u4f3c\u70b9\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {b = \\arcsin \\left( \\frac{\\sin a\\,\\sin \\beta}{\\sin \\alpha} \\right)} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {c =  2\\arctan \\left\\{ \\tan\\left(\\frac12(a-b)\\right) \\frac{\\sin\\left(\\frac12(\\alpha+\\beta)\\right)}{\\sin\\left(\\frac12(\\alpha-\\beta)\\right)}\\right\\}} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {\\gamma = 2\\arccot \\left\\{\\tan\\left(\\frac12(\\alpha-\\beta)\\right) \\frac{\\sin \\left(\\frac12(a+b)\\right)}{\\sin \\left(\\frac12(a-b)\\right)} \\right\\}} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {E = \\alpha+\\beta+\\gamma-\\pi\\,} $$<\/div> \u3002<\/li><\/ul><p> <i>a<\/i>\u304c\u6025\u6027\u3067<i>\u03b1<\/i> &gt; <i>\u03b2<\/i>\u306e\u5834\u5408\u3001\u5225\u306e\u89e3\u6c7a\u7b56\u304c\u3042\u308a\u307e\u3059\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {b = \\pi &#8211; \\arcsin \\left( \\frac{\\sin a\\,\\sin \\beta}{\\sin \\alpha} \\right)} $$<\/div> \u3001\u306a\u3069\u3002<\/li><\/ul><h3> <span>3\u3064\u306e\u89d2\u5ea6<\/span><\/h3><p>3 \u3064\u306e\u89d2\u5ea6\u304c\u65e2\u77e5\u306e\u5834\u5408\u3001\u8fba\u306f\u89d2\u5ea6\u306b\u95a2\u3059\u308b Al-Kash \u306e\u5b9a\u7406\u306e\u5909\u5f62\u306b\u3088\u3063\u3066\u53d6\u5f97\u3055\u308c\u307e\u3059\u3002\u8fba\u3092\u4e0e\u3048\u308b\u5f0f\u306f\u3001\u76f8\u88dc\u89e3\u50cf\u5ea6 (\u65e2\u77e5\u306e 3 \u3064\u306e\u8fba) \u306e\u5834\u5408\u3068\u4f3c\u3066\u3044\u307e\u3059\u3002<\/p><ul><li> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {b=\\arccos\\left(\\frac{\\cos\\beta+\\cos\\gamma\\cos\\alpha}{\\sin\\gamma\\sin\\alpha}\\right)} $$<\/div> \u3001 <\/li><li><div class=\"math-formual notranslate\">$$ {c=\\arccos\\left(\\frac{\\cos\\gamma+\\cos\\alpha\\cos\\beta}{\\sin\\alpha\\sin\\beta}\\right)} $$<\/div> \u3002 <\/li><li><div class=\"math-formual notranslate\">$$ {E=\\alpha+\\beta+\\gamma-\\pi\\,} $$<\/div><\/li><\/ul><h2><span>\u5fdc\u7528\u4f8b<\/span><\/h2><h3><span>\u4e09\u89d2\u6e2c\u91cf<\/span><\/h3><p><i>\u8a73\u7d30\u306a\u8a18\u4e8b\u300c\u4e09\u89d2\u6e2c\u91cf\u300d\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/i><\/p><div><div> <figure class=\"wp-block-image size-large is-style-default\">\n<img decoding=\"async\" alt=\"\u30a4\u30c1\u30b8\u30af\u3002 1 \u2014 \u4e09\u89d2\u6e2c\u91cf\u306b\u3088\u308b\u8239\u306e\u8ddd\u96e2\u306e\u6c7a\u5b9a\" class=\"aligncenter\" onerror=\"this.style.display=none;\" src=\"https:\/\/img.youtube.com\/vi\/9NSwcVHxwzg\/0.jpg\" style=\"width:100%;\"\/><\/figure><div>\u30a4\u30c1\u30b8\u30af\u3002 1 \u2014 \u4e09\u89d2\u6e2c\u91cf\u306b\u3088\u308b<span><a href=\"https:\/\/science-hub.click\/?p=28726\">\u8239<\/a><\/span>\u306e\u8ddd\u96e2\u306e\u6c7a\u5b9a<\/div><\/div><\/div><p>\u53cd\u5bfe\u5074\u306e\u56f3 1 \u306f\u3001\u4e09\u89d2\u6e2c\u91cf\u306b\u3088\u3063\u3066<span><a href=\"https:\/\/science-hub.click\/?p=8336\">\u30dc\u30fc\u30c8<\/a><\/span>\u306e\u8ddd\u96e2\u3092\u6c7a\u5b9a\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u8ddd\u96e2<i>l<\/i>\u304c\u65e2\u77e5\u306e 2 \u70b9\u304b\u3089\u3001\u305d\u306e\u65b9\u5411\u3001<span><a href=\"https:\/\/science-hub.click\/?p=90121\">\u30b3\u30f3\u30d1\u30b9\u3092<\/a><\/span>\u4f7f\u7528\u3057\u305f<span><a href=\"https:\/\/science-hub.click\/?p=37718\">\u65b9\u4f4d\u89d2<\/a><\/span>\u3001\u307e\u305f\u306f\u30dc\u30fc\u30c8\u3092\u7d50\u3076\u7dda\u3068\u306e\u89d2\u5ea6<i>\u03b1<\/i>\u3068<i>\u03b2 \u3092<\/i>\u6e2c\u5b9a\u3057\u307e\u3059\u3002 2\u70b9\u3002\u6e2c\u5b9a\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001\u65e2\u77e5\u306e\u8981\u7d20\u3092\u9069\u5207\u306a\u30b9\u30b1\u30fc\u30eb\u3067\u30b0\u30e9\u30d5\u4e0a\u306b\u30d7\u30ed\u30c3\u30c8\u3059\u308b\u3053\u3068\u3067\u3001\u8ddd\u96e2\u3092\u30b0\u30e9\u30d5\u3067\u63a8\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 2 \u3064\u306e\u89d2\u5ea6\u3068\u5171\u901a\u306e\u8fba\u304c\u308f\u304b\u3063\u3066\u3044\u308b\u4e09\u89d2\u5f62\u3092\u89e3\u304f\u3053\u3068\u306b\u3088\u3063\u3066\u3082\u3001\u89e3\u6790\u516c\u5f0f\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p><dl><dd><div class=\"math-formual notranslate\">$$ {d = \\frac{\\sin\\alpha\\,\\sin\\beta}{\\sin(\\alpha+\\beta)}\\,l} $$<\/div> \u3002<\/dd><\/dl><p>\u6cbf\u5cb8\u822a\u884c\u3067\u306f\u305d\u306e\u5909\u5f62\u304c\u4f7f\u7528\u3055\u308c\u3001\u8239\u304b\u3089\u898b\u305f\u30e9\u30f3\u30c9\u30de\u30fc\u30af (\u9678\u4e0a\u306e\u57fa\u6e96\u70b9) \u306e\u65b9\u4f4d\u89d2\u3092\u4f7f\u7528\u3057\u3066\u89d2\u5ea6\u304c\u63a8\u5b9a\u3055\u308c\u307e\u3059\u3002<\/p><div><div> <figure class=\"wp-block-image size-large is-style-default\">\n<img decoding=\"async\" alt=\"\u30a4\u30c1\u30b8\u30af\u3002 2 \u2014 \u4e09\u89d2\u6e2c\u91cf\u306b\u3088\u308b\u5c71\u306e\u9ad8\u3055\u306e\u6c7a\u5b9a\" class=\"aligncenter\" onerror=\"this.style.display=none;\" src=\"https:\/\/img.youtube.com\/vi\/PP7SGKSRNe8\/0.jpg\" style=\"width:100%;\"\/><\/figure><div>\u30a4\u30c1\u30b8\u30af\u3002 2 \u2014 \u4e09\u89d2\u6e2c\u91cf\u306b\u3088\u308b<span><a href=\"https:\/\/science-hub.click\/?p=19202\">\u5c71<\/a><\/span>\u306e<span><a href=\"https:\/\/science-hub.click\/?p=58663\">\u9ad8\u3055<\/a><\/span>\u306e\u6c7a\u5b9a<\/div><\/div><\/div><p>\u5225\u306e\u53ef\u80fd\u6027\u306f\u3001\u65e2\u77e5\u306e\u8ddd\u96e2<i>l<\/i>\u306e 2 \u70b9\u3067\u306e\u89d2\u9ad8\u3055<i>\u03b1<\/i>\u304a\u3088\u3073<i>\u03b2 \u3092<\/i>\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066<span><a href=\"https:\/\/science-hub.click\/?p=54359\">\u3001\u8c37<\/a><\/span>\u304b\u3089\u306e\u4e18\u307e\u305f\u306f\u5c71\u306e\u9ad8\u3055<i>h<\/i>\u3092\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u53cd\u5bfe\u5074\u306e\u56f3 2 \u306f\u3001\u6e2c\u5b9a\u70b9\u3068\u5730\u9762\u4e0a\u306e\u9802\u70b9\u306e<span><a href=\"https:\/\/science-hub.click\/?p=22236\">\u6295\u5f71<\/a><\/span>\u304c\u4f4d\u7f6e\u5408\u308f\u305b\u3055\u308c\u3066\u3044\u308b\u5358\u7d14\u5316\u3055\u308c\u305f\u30b1\u30fc\u30b9\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u5c71\u306e\u9ad8\u3055\u306f\u3001\u4e09\u89d2\u5f62\u3092\u89e3\u304f\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u307e\u305f\u306f\u5206\u6790\u7684\u306b\u6c7a\u5b9a\u3067\u304d\u307e\u3059 (\u4e0a\u8a18\u3068\u540c\u3058\u5834\u5408)\u3002 <\/p><dl><dd><div class=\"math-formual notranslate\">$$ {h = \\frac{\\sin\\alpha\\,\\sin\\beta}{\\sin(\\beta-\\alpha)} \\,l} $$<\/div> \u3002<\/dd><\/dl><p>\u5b9f\u969b\u306b\u306f\u3001\u3053\u306e\u89e3\u6c7a\u65b9\u6cd5\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002\u5730\u5f62\u306f\u5fc5\u305a\u3057\u3082\u5e73\u5766\u3067\u306f\u306a\u3044\u305f\u3081\u30012 \u70b9\u9593\u306e\u50be\u659c\u3092\u63a8\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5b9f\u969b\u306e\u9802\u4e0a\u306f\u5fc5\u305a\u3057\u3082<span><a href=\"https:\/\/science-hub.click\/?p=98391\">\u5e73\u5730<\/a><\/span>\u304b\u3089<span><a href=\"https:\/\/science-hub.click\/?p=22620\">\u89b3\u6e2c\u3067\u304d\u308b\u308f\u3051<\/a><\/span>\u3067\u306f\u306a\u304f\u3001\u89b3\u6e2c\u3055\u308c\u308b\u6700\u9ad8\u70b9\u306f\u63a5\u7dda\u52b9\u679c\u306b\u3088\u3063\u3066 2 \u3064\u306e<span>\u89b3\u6e2c<\/span>\u70b9\u306e\u9593\u3067\u4f4d\u7f6e\u304c\u7570\u306a\u308a\u307e\u3059\u3002<span><a href=\"https:\/\/science-hub.click\/?p=28874\">\u8d77\u4f0f<\/a><\/span>\u306e\u3055\u307e\u3056\u307e\u306a\u8981\u7d20\u3092\u6d77\u5cb8\u304b\u3089\u6bb5\u968e\u7684\u306b\u4e09\u89d2\u6e2c\u91cf\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001\u6e2c\u5b9a\u8aa4\u5dee\u304c\u84c4\u7a4d\u3055\u308c\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001<span><a href=\"https:\/\/science-hub.click\/?p=18792\">\u885b\u661f<\/a><\/span>\u5730\u56f3\u4f5c\u6210\u306b\u3088\u308a\u3001\u7279\u5b9a\u306e\u30d4\u30fc\u30af\u306e\u5f93\u6765\u306e\u63a8\u5b9a\u5024\u304c\u6570\u30e1\u30fc\u30c8\u30eb\u5909\u66f4\u3055\u308c\u307e\u3057\u305f\u3002 <sup style=\"padding-left:2px; cursor:help;\" title=\"\u3053\u306e\u4e00\u7bc0\u306b\u306f\u53c2\u7167\u304c\u5fc5\u8981\u3067\u3059\u3002\">[\u53c2\u7167\u3002<\/sup>\u3053\u308c\u3089\u306e\u56f0\u96e3\u306b\u3082<sup style=\"padding-left:2px; cursor:help;\" title=\"\u3053\u306e\u4e00\u7bc0\u306b\u306f\u53c2\u7167\u304c\u5fc5\u8981\u3067\u3059\u3002\">\u304b\u304b\u308f\u3089<\/sup>\u305a\u3001 <span title=\"\u30ed\u30fc\u30de\u6570\u5b57\u3067\u66f8\u304b\u308c\u305f\u6570\u5b57\">19<\/span><sup class=\"exposant\">\u4e16\u7d00<\/sup>\u306b\u30d5\u30ea\u30fc\u30c9\u30ea\u30d2 \u30b2\u30aa\u30eb\u30af \u30f4\u30a3\u30eb\u30d8\u30eb\u30e0 \u30d5\u30a9\u30f3 \u30b7\u30e5\u30c8\u30eb\u30fc\u30f4\u30a7\u306f\u3001\u30ce\u30eb\u30a6\u30a7\u30fc\u304b\u3089<span>\u9ed2\u6d77<\/span>\u307e\u3067 2800 km \u306b\u308f\u305f\u3063\u3066<span><a href=\"https:\/\/science-hub.click\/?p=102377\">\u30e8\u30fc\u30ed\u30c3\u30d1\u3092<\/a><\/span>\u6a2a\u5207\u308b<span><a href=\"https:\/\/science-hub.click\/?p=78679\">\u4e00\u9023<\/a><\/span>\u306e\u6e2c\u5730\u7dda\u30de\u30fc\u30ab\u30fc\u3067\u3042\u308b<span>\u30b7\u30e5\u30c8\u30eb\u30fc\u30f4\u30a7\u6e2c\u5730\u5f27\u3092<\/span>\u5efa\u8a2d\u3055\u305b\u307e\u3057\u305f\u3002\u305d\u306e\u76ee\u7684\u306f\u3001\u5730\u7403\u306e\u30b5\u30a4\u30ba\u3068\u5f62\u72b6\u3092\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u3067\u3057\u305f\u3002\u5730\u7403: 1853 \u5e74\u3001<span><a href=\"https:\/\/science-hub.click\/?p=87911\">\u79d1\u5b66\u8005\u306f<\/a><\/span>\u5730\u7403\u306e<span><a href=\"https:\/\/science-hub.click\/?p=35864\">\u5b50\u5348\u7dda<\/a><\/span>\u306e\u8ddd\u96e2\u304c 188 m (2\u00d710 <sup class=\"exposant\">-5<\/sup> ) \u4ee5\u5185\u3067\u3001<span><a href=\"https:\/\/science-hub.click\/?p=91451\">\u5730\u7403<\/a><\/span>\u306e\u5e73\u5766\u5ea6\u304c 1% \u4ee5\u5185\u3067\u3042\u308b\u3053\u3068\u3092\u6e2c\u5b9a\u3057\u307e\u3057\u305f\u3002 <sup class=\"reference\" id=\"_ref-0\"><span>[<\/span> 1 <span>]<\/span><\/sup><\/p><h3><span>\u5730\u7403\u4e0a\u306e 2 \u70b9\u9593\u306e\u8ddd\u96e2<\/span><\/h3><p>\u5730\u7403\u4e0a\u306e 2 \u3064\u306e\u70b9 A \u3068 B \u3092\u305d\u308c\u305e\u308c\u7def\u5ea6<i>\u03bb<\/i> <sub>A<\/sub>\u3068<i>\u03bb<\/i> <sub>B<\/sub> \u3001\u7d4c\u5ea6<i>L<\/i> <sub>A<\/sub>\u3068<i>L<\/i> <sub>B<\/sub>\u3068\u3057\u3066\u8003\u3048\u307e\u3059\u3002\u305d\u308c\u3089\u306e\u8ddd\u96e2\u3092\u6c7a\u5b9a\u3059\u308b\u305f\u3081\u306b\u3001\u4e09\u89d2\u5f62 ABC \u3092\u8003\u616e\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u3001C \u306f<span><a href=\"https:\/\/science-hub.click\/?p=33010\">\u5317\u6975<\/a><\/span>\u3067\u3059\u3002\u3053\u306e\u4e09\u89d2\u5f62\u3067\u306f\u6b21\u306e\u3053\u3068\u304c\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002 <\/p><ul><li><div class=\"math-formual notranslate\">$$ {a = 90^\\mathrm{o} &#8211; \\lambda_\\mathrm{B}\\,} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {b = 90^\\mathrm{o} &#8211; \\lambda_\\mathrm{A}\\,} $$<\/div><\/li><li><div class=\"math-formual notranslate\">$$ {\\gamma = L_\\mathrm{A}-L_\\mathrm{B}\\,} $$<\/div><\/li><\/ul><p>\u89d2\u5ea6\u3068\u96a3\u63a5\u3059\u308b 2 \u3064\u306e\u8fba\u304c\u308f\u304b\u3063\u3066\u3044\u308b\u5834\u5408\u306b\u4e09\u89d2\u5f62\u3092\u89e3\u304f\u3068\u3001\u6b21\u306e\u7d50\u8ad6\u304c\u5f97\u3089\u308c\u307e\u3059\u3002 <\/p><dl><dd><div class=\"math-formual notranslate\">$$ {\\mathrm{AB} = R \\arccos\\left\\{\\sin \\lambda_\\mathrm{A} \\,\\sin \\lambda_\\mathrm{B} + \\cos \\lambda_\\mathrm{A} \\,\\cos \\lambda_\\mathrm{B} \\,\\cos \\left(L_\\mathrm{A}-L_\\mathrm{B}\\right)\\right\\}} $$<\/div> \u3001<\/dd><\/dl><p>\u3053\u3053\u3067\u3001 <i>R \u306f<\/i>\u5730\u7403\u306e\u534a\u5f84\u3067\u3059\u3002<span>\u8a08\u7b97\u6a5f\u304c<\/span>\u4e09\u89d2\u95a2\u6570\u306e\u5ea6\u3092\u53d7\u3051\u5165\u308c\u306a\u3044\u9650\u308a\u3001<span>\u6570\u5024\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/span>\u3067\u306f\u5ea7\u6a19\u3092\u30e9\u30b8\u30a2\u30f3\u306b\u5909\u63db\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p><\/div><h2 class=\"ref_link\">\u53c2\u8003\u8cc7\u6599<\/h2><ol><li><a class=\"notranslate\" href=\"https:\/\/ar.wikipedia.org\/wiki\/%D8%AD%D9%84_%D8%A7%D9%84%D9%85%D8%AB%D9%84%D8%AB%D8%A7%D8%AA\">\u062d\u0644 \u0627\u0644\u0645\u062b\u0644\u062b\u0627\u062a \u2013 arabe<\/a><\/li><li> <a class=\"notranslate\" href=\"https:\/\/bs.wikipedia.org\/wiki\/Rje%C5%A1avanje_trougla\">Rje\u0161avanje trougla \u2013 bosniaque<\/a><\/li><li> <a class=\"notranslate\" href=\"https:\/\/ca.wikipedia.org\/wiki\/Resoluci%C3%B3_de_triangles\">Resoluci\u00f3 de triangles \u2013 catalan<\/a><\/li><li> <a class=\"notranslate\" href=\"https:\/\/cv.wikipedia.org\/wiki\/%D0%92%D0%B8%C3%A7%D0%BA%C4%95%D1%82%D0%B5%D1%81%D0%BB%C4%95%D1%85%D1%81%D0%B5%D0%BD%D0%B5_%D1%88%D1%83%D1%82%D0%BB%D0%B0%D1%81%D1%81%D0%B8\">\u0412\u0438\u00e7\u043a\u0115\u0442\u0435\u0441\u043b\u0115\u0445\u0441\u0435\u043d\u0435 \u0448\u0443\u0442\u043b\u0430\u0441\u0441\u0438 \u2013 tchouvache<\/a><\/li><li> <a class=\"notranslate\" href=\"https:\/\/da.wikipedia.org\/wiki\/Trekanttilf%C3%A6lde\">Trekanttilf\u00e6lde \u2013 danois<\/a><\/li><li> <a class=\"notranslate\" href=\"https:\/\/de.wikipedia.org\/wiki\/Dreieck#Berechnung_eines_beliebigen_Dreiecks\">Dreieck \u2013 allemand<\/a><\/li><\/ol><\/div>\n<div class=\"feature-video\">\n <h2>\n  \u4e09\u89d2\u5f62\u3092\u89e3\u304f &#8211; \u5b9a\u7fa9\u30fb\u95a2\u9023\u52d5\u753b\n <\/h2>\n <div class=\"video-item\">\n  \n  <figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\">\n   <div class=\"wp-block-embed__wrapper\">\n    <iframe loading=\"lazy\" title=\"\u4e09\u89d2\u5f62\u3092\u89e3\u304f\u2461\u301c2\u8fba\u30681\u89d2\u304b\u3089\u301c\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/Oe2uKw3foT4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n   <\/div>\n  <\/figure>\n  \n <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5e7e\u4f55\u5b66\u3067\u306f\u3001\u4e09\u89d2\u5f62\u3092\u89e3\u304f\u3053\u3068\u306f\u3001\u4e09\u89d2\u5f62\u306e\u3055\u307e\u3056\u307e\u306a\u8981\u7d20 (\u8fba\u306e\u9577\u3055\u3001\u89d2\u5ea6\u306e\u6e2c\u5b9a\u5024\u3001\u9762\u7a4d) 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