Description
ATAN2 function calculates the arc tangent of the two variables @b1 and @b2. It is similar to calculating the arc tangent of @b2 / @b1, except that the signs of both arguments are used to determine the quadrant of the result. The result is in radians.
This function is Excel compatible.
Examples
ATAN2(0.5,1.0) equals 1.107149.
ATAN2(-0.5,2.0) equals 1.815775.