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Version: 4.0.0

Math.cos()

The Math.cos() function returns the cosine of a number in radians.

Syntax​

Math.cos(x)

Parameters​

  • x
    • : A number representing an angle in radians.

Return value​

The cosine of x, between -1 and 1, inclusive. If x is Infinity, -Infinity, or NaN, returns NaN.

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).