acos vex function

Contexts: chop , cop , displace , fog , image3d , light , photon , pop , shadow , sop , surface

Tags: math

Returns the arc-cosine of the argument.

1. float acos(float )

2. vector acos(vector )

3. vector4 acos(vector4 )

Returns the arc-cosine of the argument. The return value is in the range 0 to pi.