The Math.cos()
static method returns the cosine of a number in radians.
The Math.cos()
static method returns the cosine of a number in radians.
Math.cos(x)
x
A number representing an angle in radians.
Because cos()
is a static method of Math
, you always use it as Math.cos()
, rather than as a method of a Math
object you created (Math
is not a constructor).
Math.cos(-Infinity); // NaN Math.cos(-0); // 1 Math.cos(0); // 1 Math.cos(1); // 0.5403023058681398 Math.cos(Math.PI); // -1 Math.cos(2 * Math.PI); // 1 Math.cos(Infinity); // NaN
Specification |
---|
ECMAScript Language Specification # sec-math.cos |
Desktop | Mobile | Server | ||||||||||||
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Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | Deno | Node.js | ||
cos |
1 | 12 | 1 | 3 | 1 | 18 | 4 | 10.1 | 1 | 1.0 | 4.4 | 1.0 | 0.10.0 |
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/cos