The Math. atan2 () method in JavaScript is described in detail, and javascriptatan2

The Math. atan2 () method in JavaScript is described in detail, and javascriptatan2

This method returns the arc tangent of Its Parameter quotient. The ATAN2 method returns the value between-pi and the angle theta at the point (x, y) of PI.
Syntax

Math.atan2( x, y ) ;

The following is the detailed information about the parameters:

• X and y: a number.

Return Value:

Returns the arc tangent of a radian.

Math.atan2( ±0, -0 ) returns ±PI.Math.atan2( ±0, +0 ) returns ±0.Math.atan2( ±0, -x ) returns ±PI for x < 0.Math.atan2( ±0, x ) returns ±0 for x > 0.Math.atan2( y, ±0 ) returns -PI/2 for y > 0.Math.atan2( ±y, -Infinity ) returns ±PI for finite y > 0.Math.atan2( ±y, +Infinity ) returns ±0 for finite y > 0.Math.atan2( ±Infinity, +x ) returns ±PI/2 for finite x.Math.atan2( ±Infinity, -Infinity ) returns ±3*PI/4.Math.atan2( ±Infinity, +Infinity ) returns ±PI/4.

Example:

This produces the following results:
First Test Value : 1.4056476493802698Second Test Value : 0.16514867741462683Third Test Value : 3.141592653589793Fourth Test Value : 2.356194490192345