acos()

Function group	Execute on client	Platform(s)
Trigonometric	YES	All

Syntax

acos(number)

Description

Returns the arc cosine of a number in the range 0 to 180 degrees (0 to pi radians if #RAD is true), or returns 0 if the number is not in the range -1 to 1.

Example

Calculate
 
lResult
 as 
acos
(
sqr(
(2)/2)

# returns 45