The Math.cos()
static function returns the cosine of the specified angle, which must be specified in radians. This value is .
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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 (ECMA-262) The definition of 'Math.cos' in that specification. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
cos | Chrome Full support 1 | Edge Full support 12 | Firefox Full support 1 | IE Full support 3 | Opera Full support 3 | Safari Full support 1 | WebView Android Full support 1 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android Full support 10.1 | Safari iOS Full support 1 | Samsung Internet Android Full support 1.0 | nodejs Full support 0.1.100 |
Legend
- Full support
- Full support