Math.cos()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The Math.cos()
static method returns the cosine of a number in radians.
Try it
Syntax
js
Math.cos(x)
Parameters
x
-
A number representing an angle in radians.
Return value
Description
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()
js
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
Specifications
Specification |
---|
ECMAScript Language Specification # sec-math.cos |
Browser compatibility
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