| angle | The REAL radian value for which to find the hyperbolic cosine. | 
| Return: | COSH returns a single REAL value. | 
The COSH function returns the hyperbolic cosine of the angle.
Example:
Deg2Rad := 0.0174532925199; //number of radians in a degree
Angle45 := 45 * Deg2Rad;    //translate 45 degrees into radians
HyperbolicCosine45 := COSH(Angle45); 
                           //get hyperbolic cosine of the 45 degree angle
OUTPUT(HyperbolicCosine45);