JavaScript Math.atan2Method ()

Math.atan2()Math.atan2The () method returns a value between-The numerical value between π and π, representing the angle θ(x, y) of the point.

This is the counterclockwise angle between the positive x-axis and the point (x, y) (in radians).

Note:The parameters of this function are passed first with the y-coordinate, then with the x-coordinate.

Because atan2() is a static method of Math, so you always use it asMath.atan2(), rather than used as a method of creating the Math object.

Syntax:

Math.atan2(y,  x)

Example

Math.atan2(90,　15);

All browsers fully support Math.atan2Method ():

Method
Math.atan2()	Is	Is	Is	Is	Is

Parameter	Description
y	The y-coordinate of the point
x	The x-coordinate of the point

Return Value:	The arc angle between the positive x-axis and the ray from (0,0) to the point ([-π, π)
JavaScript Version:	ECMAScript 1