The ACOS Function

The ACOS function returns a numeric value in radians that approximates the arccosine of argument-1. The type of this function is numeric.

General Format

FUNCTION ACOS (argument-1)

Arguments

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.

Returned Values

The returned value is the approximation of the arccosine of argument-1 and is greater than or equal to zero and less than or equal to pi.
Note: Conversion factors from radians to degrees and Gon (grad) are specified in the section Trigonometric Functions.
Floating-point format is used for numeric non-integer results.