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ikeryou/trigonometric.js

Created September 1, 2016 06:34
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三角関数
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trigonometric.js
// x = 底辺
// y = 対辺
// r = 斜辺
// radian = 底辺、斜辺間の角度(ラジアン)
var x = r * Math.cos(radian);
var y = r * Math.sin(radian);
var r = x / Math.cos(radian);
var r = y / Math.sin(radian);
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