| cosine | The REAL cosine value for which to find the arccosine. |
| Return: | ACOS returns a single REAL value. |
The ACOS function returns the arccosine (inverse) of the cosine, in radians.
Example:
Deg2Rad := 0.0174532925199; //number of radians in a degree
cosineAngle := 0.75;
acos(cosineAngle) * Deg2Rad;