The Math.cos() static function returns the cosine of the specified angle, which must be specified in radians.
Math.cos()
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Syntax
Math.cos(x)
Parameters
-
x -
The angle in radians for which to return the cosine.
Return value
The cosine of the given number.
Description
The Math.cos() method returns a numeric value between -1 and 1, which represents the cosine of the angle.
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).
Examples
Using Math.cos()
Math.cos(0); // 1 Math.cos(1); // 0.5403023058681398 Math.cos(Math.PI); // -1 Math.cos(2 * Math.PI); // 1
Specifications
| Specification |
|---|
| ECMAScript Language Specification # sec-math.cos |
Browser compatibility
| Desktop | Mobile | Server | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
cos |
1
|
12
|
1
|
3
|
3
|
1
|
1
|
18
|
4
|
10.1
|
1
|
1.0
|
1.0
|
0.10.0
|
See also
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/cos
