ACOS
The ACOS function returns a numeric value in radians that approximates the arccosine of the argument specified.
The function type is numeric.
- argument-1
- Must be class numeric. The value of argument-1 must be greater than or equal to -1 and less than or equal to +1.
The returned value is the approximation of the arccosine of the argument and is greater than or equal to zero and less than or equal to Pi.