JavaScript Math.atan() Method

Math.atan()The method returns the arctangent value of a number (in radians).

The Math.atan() method returns a value between-π/ 2and π/ 2numeric values between radians.

Since atan() is a static method of Math, you always use it asMath.atan()，not used as a method of creating the Math object.

Syntax:

Math.atan(x)

Example

Math.atan(2);

All browsers fully support the Math.atan() method:

Method
Math.atan()	Yes	Yes	Yes	Yes	Yes

Parameter	Description
x	Value

Return value:	Inverse tangent of a given number (in radians)
JavaScript Version:	ECMAScript 1