Cos is a trigonometric function that calculates angles.
Cos uses radians, and returns the Cos (or cosine) of the value given in the parameter e.
e is a radian value, where one (1) radian is calculated as 180 over Pi, and is equivalent to an angle of 57.29577951 degrees.
Declaration: Function Cos(e : Extended) : Extended
Several examples follow.
Please also refer to Sin.