Returns the angle (in radians) from the X axis to a point (y,x).
Syntax
Math.atan2(y, x)
Parameters
x
Required. A numeric expression representing the cartesian x-coordinate.
y
Required. A numeric expression representing the cartesian y-coordinate.
Remarks
The return value is between -pi and pi. It represents the angle of the supplied (y,x) point, in radians.
Applies To: Math Object
Requirements
Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Also supported in Store apps (Windows 8 and Windows Phone 8.1). See Version Information.