{"id":5156,"date":"2024-12-26T21:31:52","date_gmt":"2024-12-26T12:31:52","guid":{"rendered":"https:\/\/torisetudy.com\/?p=5156"},"modified":"2026-03-09T17:45:34","modified_gmt":"2026-03-09T08:45:34","slug":"%e4%b8%80%e8%88%ac%e8%a7%92%e3%81%a8%e5%bc%a7%e5%ba%a6%e6%b3%95","status":"publish","type":"post","link":"https:\/\/torisetudy.com\/?p=5156","title":{"rendered":"\u4e00\u822c\u89d2\u3068\u5f27\u5ea6\u6cd5"},"content":{"rendered":"\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u304b\u3089\u6570\u5b66\u2161\u306e\u5185\u5bb9\u306b\u306a\u308a\u307e\u3059\uff01<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">\u76ee\u6b21<\/p><ul class=\"toc_list\"><li><a href=\"#i\"><span class=\"toc_number toc_depth_1\">1<\/span> \u4e00\u822c\u89d2<\/a><\/li><li><a href=\"#i-2\"><span class=\"toc_number toc_depth_1\">2<\/span> \u5f27\u5ea6\u6cd5<\/a><\/li><\/ul><\/div>\n<h2 class=\"wp-block-heading\"><span id=\"i\">\u4e00\u822c\u89d2<\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u8a00\u8449\u306e\u5b9a\u7fa9<\/h3>\n\n\n\n<p>\u79c1\u305f\u3061\u304c\u666e\u6bb5\uff0c\u89d2\u306e\u5927\u304d\u3055\u3092\u6271\u3046\u3068\u304d\u306b\u306f\uff0c$0\\Deg$ \u304b\u3089 $360\\Deg$ \u306e\u7bc4\u56f2\u3067\u8003\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u307e\u305a\u306f\uff0c\u3053\u306e\u89d2\u306e\u5927\u304d\u3055\u306b\u5bfe\u3059\u308b\u8003\u3048\u65b9\u3092\u62e1\u5f35\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"182\" height=\"123\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66142.svg\" alt=\"\" class=\"wp-image-5185\"\/><noscript><img decoding=\"async\" width=\"182\" height=\"123\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66142.svg\" alt=\"\" class=\"wp-image-5185\"\/><\/noscript><\/figure>\n\n\n\n<p>\u4e0a\u306e\u56f3\u306e\u3088\u3046\u306b\uff0c\u56fa\u5b9a\u3055\u308c\u305f\u534a\u76f4\u7dda $\\rmO\\rmX$ \u3068\u52d5\u304f\u534a\u76f4\u7dda $\\rmO\\rmP$ \u3092\u8003\u3048\u3066\u307f\u307e\u3059\u3002\u3053\u306e $\\rmO\\rmX$ \u3092<span class=\"st-mymarker-s\">\u59cb\u7dda<\/span>\uff0c$\\rmO\\rmP$ \u3092<span class=\"st-mymarker-s\">\u52d5\u5f84<\/span>\u3068\u3044\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>$\\rmO\\rmP$ \u3092 $\\rmO\\rmX$ \u306b\u5bfe\u3057\u3066\u53cd\u6642\u8a08\u5468\u308a\uff08\u6b63\u306e\u5411\u304d\uff09\u306b\u56de\u3057\u305f\u3068\u304d\u306e $\\angle\\rmX\\rmO\\rmP$ \u3092<span class=\"st-mymarker-s\">\u6b63\u306e\u89d2<\/span>\uff0c$\\rmO\\rmP$ \u3092 $\\rmO\\rmX$ \u306b\u5bfe\u3057\u3066\u6642\u8a08\u5468\u308a\uff08\u8ca0\u306e\u5411\u304d\uff09\u306b\u56de\u3057\u305f\u3068\u304d\u306e $\\angle\\rmX\\rmO\\rmP$ \u3092<span class=\"st-mymarker-s\">\u8ca0\u306e\u89d2<\/span>\u3068\u3044\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u822c\u89d2<\/h3>\n\n\n\n<p>\u6b21\u306b\uff0c$390\\Deg$ \u3068\u3044\u3046\u89d2\u306e\u5927\u304d\u3055\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"142\" height=\"102\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66230.svg\" alt=\"\" class=\"wp-image-5194\"\/><noscript><img decoding=\"async\" width=\"142\" height=\"102\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66230.svg\" alt=\"\" class=\"wp-image-5194\"\/><\/noscript><\/figure>\n\n\n\n<p>\u3053\u308c\u306f\u4e0a\u306e\u56f3\u306e\u3088\u3046\u306b\uff0c\u52d5\u5f84 $\\rmO\\rmP$ \u3092\u6b63\u306e\u5411\u304d\u306b $360\\Deg$ \u56de\u8ee2\u3057\u305f\u3042\u3068\uff0c\u3055\u3089\u306b $30\\Deg$ \u56de\u8ee2\u3055\u305b\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\uff0c$390\\Deg$ \u3068 $30\\Deg$ \u306f\u540c\u3058\u89d2\u306e\u5927\u304d\u3055\u3092\u8868\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u3053\u3068\u306f\uff0c$750\\Deg(=30\\Deg+360\\Deg\\times2)$\uff0c$1110\\Deg(=30\\Deg+360\\times3)$\uff0c$-330\\Deg(=30\\Deg+360\\Deg\\times(-1))$ \u306a\u3069\u3082\u540c\u3058\u3067\u3059\u3002\u4e00\u822c\u306b\uff0c\u59cb\u7dda\u3068\u52d5\u5f84\u306e\u306a\u3059\u89d2\u306f\uff0c<\/p>\n\n\n\n<p>$$\\alpha+360\\Deg\\times n\\ \\stext{\uff08$n$ \u306f\u6574\u6570\uff09}$$\u3068\u8868\u3059\u3053\u3068\u304c\u3067\u304d\uff0c$n$ \u306e\u5024\u3092\u5909\u3048\u3066\u3082\u52d5\u5f84 $\\rmO\\rmP$ \u306e\u4f4d\u7f6e\u306f\u540c\u3058\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\uff0c$n$ \u306a\u3069\u306e\u6587\u5b57\u3092\u7528\u3044\u3066\u8868\u3057\u305f\u89d2\u3092<span class=\"st-mymarker-s\">\u4e00\u822c\u89d2<\/span>\u3068\u3044\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"i-2\">\u5f27\u5ea6\u6cd5<\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5f27\u5ea6\u6cd5\u3067\u306e\u89d2\u5ea6\u8868\u73fe<\/h3>\n\n\n\n<p>\u3053\u308c\u307e\u3067\u79c1\u305f\u3061\u306f\uff0c\u89d2\u306e\u5927\u304d\u3055\u3092\u8868\u3059\u3068\u304d\u5ea6\u6570\u6cd5\uff08$30\\Deg$\uff0c$90\\Deg$\uff0c$360\\Deg$ \u306a\u3069\uff09\u3092\u7528\u3044\u3066\u8868\u3057\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8868\u3057\u65b9\u306f\uff0c\u89d2\u306e\u5927\u304d\u3055\u3092\u8868\u3059\u3068\u304d\u306b\u306f\u3068\u3066\u3082\u4fbf\u5229\u306a\u30c4\u30fc\u30eb\u306a\u306e\u3067\u3059\u304c\uff0c\u6247\u5f62\u306e\u9762\u7a4d\u3084\u5f27\u306e\u9577\u3055\u3092\u6c42\u3081\u308b\u969b\uff0c\u5f0f\u304c\u5c11\u3057\u7169\u96d1\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u534a\u5f84\u304c $r$\uff0c\u4e2d\u5fc3\u89d2\u304c $\\theta$ \u306e\u5f27\u306e\u9577\u3055 $l$ \u3068\u6247\u5f62\u306e\u9762\u7a4d $S$ \u306f\u305d\u308c\u305e\u308c\uff0c<\/p>\n\n\n\n<p>$$\\begin{aligned}l&amp;=2\\pi r\\cdot\\Bun{\\theta}{360}\\\\ S&amp;=\\pi r^2\\cdot\\Bun{\\theta}{360}\\end{aligned}$$\u3068\u3044\u3046\u5f62\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon2 clearfix\"><div class=\"st-kaiwa-area2\"><div class=\"st-kaiwa-hukidashi2\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u5f27\u306e\u9577\u3055\u3084\u9762\u7a4d\u3092\u8003\u3048\u308b\u969b\uff0c\u8868\u73fe\u306e\u4ed5\u65b9\u3092\u30b7\u30f3\u30d7\u30eb\u306b\u3067\u304d\u306a\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<\/div><\/div><\/div><div class=\"st-kaiwa-face2\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u751f\u5f92\uff08\u7591\u554f\uff09.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u751f\u5f92\uff08\u7591\u554f\uff09.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name2\">\u751f\u5f92<\/div><\/div><\/div>\n\n\n\n<p>\u6247\u5f62\u306e\u5f27\u306e\u9577\u3055 $l$ \u306f\uff0c$l=2\\pi r\\cdot\\Bun{\\theta}{360}$ \u306e\u5f0f\u304b\u3089\u308f\u304b\u308b\u901a\u308a\uff0c\u4e2d\u5fc3\u89d2 $\\theta$ \u306b\u6bd4\u4f8b\u3057\u307e\u3059\u3002\u3068\u3044\u3046\u3053\u3068\u306f\uff0c\u5f27\u306e\u9577\u3055\u3092\u7528\u3044\u3066\uff0c\u89d2\u306e\u5927\u304d\u3055\u3092\u8868\u3059\u3053\u3068\u3082\u3067\u304d\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"184\" height=\"172\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66231.svg\" alt=\"\" class=\"wp-image-5189\"\/><noscript><img decoding=\"async\" width=\"184\" height=\"172\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66231.svg\" alt=\"\" class=\"wp-image-5189\"\/><\/noscript><\/figure>\n\n\n\n<p>\u305d\u3053\u3067\uff0c\u56f3\u306e $\\angle\\rmX\\rmO\\rmP$ \u306e\u5927\u304d\u3055\u3092\uff0c\u5358\u4f4d\u5186\u4e0a\u306e\u5f27 $\\rmA\\rmB$ \u306e\u9577\u3055\u3092\u7528\u3044\u3066\u8868\u3059\u3053\u3068\u306b\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\uff0c\u5358\u4f4d\u5186\u306e\u5f27\u306e\u9577\u3055\u3092\u7528\u3044\u3066\u89d2\u306e\u5927\u304d\u3055\u3092\u8868\u3059\u65b9\u6cd5\u3092<span class=\"st-mymarker-s\">\u5f27\u5ea6\u6cd5<\/span>\u3068\u3044\u3044\uff0c\u5358\u4f4d\u3092<span class=\"st-mymarker-s\">\u30e9\u30b8\u30a2\u30f3\uff08$\\mathrm{rad}$)<\/span>\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon3 clearfix\"><div class=\"st-kaiwa-area2\"><div class=\"st-kaiwa-hukidashi2\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u5177\u4f53\u7684\u306b\u3042\u3089\u308f\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n<\/div><\/div><\/div><div class=\"st-kaiwa-face2\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u751f\u5f92\uff08\u6319\u624b\uff09.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u751f\u5f92\uff08\u6319\u624b\uff09.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name2\">\u751f\u5f92<\/div><\/div><\/div>\n\n\n\n<p>\u534a\u5f84 $1$ \u306e\u5186\u306e\u5834\u5408\uff0c\u5186\u5468\u306e\u9577\u3055\u306f $2\\pi$ \u3068\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\uff0c$360\\Deg=2\\pi \\rad$ \u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\uff0c<\/p>\n\n\n\n<p>$$\\pi\\rad=180\\Deg$$\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u9006\u306b\uff0c\u5ea6\u6570\u6cd5\u304b\u3089\u5f27\u5ea6\u6cd5\u306b\u5909\u63db\u3059\u308b\u3068\u304d\u3082\uff0c$180\\Deg=\\pi\\rad$ \u3092\u3082\u3068\u306b\u3059\u308c\u3070\uff0c<\/p>\n\n\n\n<p>$$90\\Deg=\\bun{\\pi}{2}\\rad,\\ 45\\Deg=\\bun{\\pi}{4}\\rad,\\ 30\\Deg=\\bun{\\pi}{6}\\rad$$\u306a\u3069\u3068\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u5358\u4f4d\u306e $\\rad$ \u306f\uff0c\u7701\u7565\u3057\u3066\u304b\u304b\u308c\u308b\u3053\u3068\u304c\u591a\u304f\uff0c\u5358\u306b<\/p>\n\n\n\n<p>$$\\pi\\,(=180\\Deg),\\ \\bun{\\pi}{3}\\,(=60\\Deg),\\ -\\bun{\\pi}{2}\\,(=-90\\Deg)$$\u306a\u3069\u3068\u304b\u304b\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u516c\u5f0f\u306e\u307e\u3068\u3081<\/h3>\n\n\n\n<p>\u5f27\u5ea6\u6cd5\u3092\u7528\u3044\u305f\u5834\u5408\uff0c\u534a\u5f84\u304c $r$\uff0c\u4e2d\u5fc3\u89d2\u304c $\\theta$ \u306e\u6247\u5f62\u306e\u5f27\u306e\u9577\u3055 $l$\uff0c\u9762\u7a4d $S$ \u306b\u3064\u3044\u3066\uff0c\u516c\u5f0f\u3092\u307e\u3068\u3081\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u534a\u5f84\u304c $1$ \u3067\uff0c\u4e2d\u5fc3\u89d2\u304c $\\theta$ \u306e\u6247\u5f62\u306e\u5f27\u306e\u9577\u3055\u306f $\\theta$\uff08\u3053\u308c\u304c\u5f27\u5ea6\u6cd5\u306e\u5b9a\u7fa9\uff01\uff09\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"179\" height=\"146\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66363.svg\" alt=\"\" class=\"wp-image-5190\"\/><noscript><img decoding=\"async\" width=\"179\" height=\"146\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66363.svg\" alt=\"\" class=\"wp-image-5190\"\/><\/noscript><\/figure>\n\n\n\n<p>\u534a\u5f84\u304c $r$ \u3067\uff0c\u4e2d\u5fc3\u89d2\u304c $\\theta$ \u306e\u6247\u5f62\u3068\u306e\u76f8\u4f3c\u6bd4\u306f\uff0c$1:r$ \u306a\u306e\u3067\uff0c<\/p>\n\n\n\n<p>$$\\theta:l=1:r$$\u3068\u306a\u308a\u307e\u3059\u3002\u3088\u3063\u3066\uff0c<\/p>\n\n\n\n<p>$$l=r\\theta\\stext{\\quad\u2026\\ \u2460}$$\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"124\" height=\"123\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66364.svg\" alt=\"\" class=\"wp-image-5191\"\/><noscript><img decoding=\"async\" width=\"124\" height=\"123\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u6570\u5b66364.svg\" alt=\"\" class=\"wp-image-5191\"\/><\/noscript><\/figure>\n\n\n\n<p>\u307e\u305f\uff0c\u534a\u5f84\u304c $r$ \u306e\u5186\u306e\u9762\u7a4d\u306f $\\pi r^2$ \u3067\u8868\u305b\u307e\u3059\u304b\u3089\uff0c\u4e2d\u5fc3\u89d2\u304c $\\theta$ \u306e\u6247\u5f62\u306e\u9762\u7a4d $S$ \u306f\uff0c<\/p>\n\n\n\n<p>$$S=\\pi r^2\\times\\Bun{\\theta}{2\\pi}=\\bun12r^2\\theta\\stext{\\quad\u2026\\ \u2461}$$\u3068\u8868\u305b\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3055\u3089\u306b\uff0c\u2460\uff0c\u2461\u3088\u308a\uff0c<\/p>\n\n\n\n<p>$$S=\\bun12r^2\\theta=\\bun12r(r\\theta)=\\bun12rl$$\u306e\u3088\u3046\u306b\uff0c\u5f27\u306e\u9577\u3055\u3068\u534a\u5f84\u306e\u307f\u3067\u8868\u3059\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-st-blocks-my-box st-mybox has-title post-hashiro-point\" style=\"background-color:#fff;border-color:#ff7f50\"><p class=\"st-mybox-title\" style=\"color:#ff7f50;font-weight:bold;text-shadow:#fff 3px 0px 0px, #fff 2.83487px .981584px 0px, #fff 2.35766px 1.85511px 0px, #fff 1.62091px 2.52441px 0px, #fff .705713px 2.91581px 0px, #fff -0.287171px 2.98622px 0px, #fff -1.24844px 2.72789px 0px, #fff -2.07227px 2.16926px 0px, #fff -2.66798px 1.37182px 0px, #fff -2.96998px .42336px 0px, #fff -2.94502px -0.571704px 0px, #fff -2.59586px -1.50383px 0px, #fff -1.96093px -2.27041px 0px, #fff -1.11013px -2.78704px 0px, #fff -0.137119px -2.99686px 0px, #fff .850987px -2.87677px 0px, #fff 1.74541px -2.43999px 0px, #fff 2.44769px -1.73459px 0px, #fff 2.88051px -0.838246px 0px;background:linear-gradient(0deg, #fff 0%, #fff 55%, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0) 100%)\"><i class=\"st-fa st-svg-lightbulb-o st-css-no\" aria-hidden=\"\"><\/i>\u5f27\u5ea6\u6cd5\u306b\u95a2\u3059\u308b\u516c\u5f0f<\/p><div class=\"st-in-mybox\">\n<p class=\"has-st-margin-bottom has-st-margin-bottom--1\">\u5f27\u5ea6\u6cd5\u3092\u7528\u3044\u305f\u5834\u5408\uff0c\u534a\u5f84\u304c $r$\uff0c\u4e2d\u5fc3\u89d2\u304c $\\theta$ \u306e\u6247\u5f62\u306e\u5f27\u306e\u9577\u3055 $l$\uff0c\u9762\u7a4d $S$ \u306f\uff0c<\/p>\n\n\n\n<p class=\"has-st-margin-bottom has-st-margin-bottom--1\">$$\\begin{aligned} l&amp;=r\\theta\\\\ S&amp;=\\bun12r^2\\theta=\\bun12rl \\end{aligned}$$<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>$l=r\\theta$ \u306e\u5f0f\u306f\u7269\u7406\u3067\u3082\u4f7f\u7528\u3057\u307e\u3059\u306e\u3067\u3057\u3063\u304b\u308a\u3068\u899a\u3048\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u6b211 \u4e00\u822c\u89d22 \u5f27\u5ea6\u6cd5 \u4e00\u822c\u89d2 \u8a00\u8449\u306e\u5b9a\u7fa9 \u79c1\u305f\u3061\u304c\u666e\u6bb5\uff0c\u89d2\u306e\u5927\u304d\u3055\u3092\u6271\u3046\u3068\u304d\u306b\u306f\uff0c$0\\Deg$ \u304b\u3089 $360\\Deg$ \u306e\u7bc4\u56f2\u3067\u8003\u3048\u307e\u3059\u3002 \u4e0a\u306e\u56f3\u306e\u3088\u3046\u306b\uff0c\u56fa\u5b9a\u3055\u308c\u305f\u534a\u76f4\u7dda $\\rmO\\rmX &#8230; <\/p>\n","protected":false},"author":1,"featured_media":5146,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33,32],"tags":[],"class_list":["post-5156","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-trigonometry","category-32"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/posts\/5156"}],"collection":[{"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5156"}],"version-history":[{"count":18,"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/posts\/5156\/revisions"}],"predecessor-version":[{"id":5211,"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/posts\/5156\/revisions\/5211"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/media\/5146"}],"wp:attachment":[{"href":"https:\/\/torisetudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5156"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5156"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5156"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}