ArcCos() Function

Returns the arcus cosine of a number. It is the reciprocal function to the Cos() function. Use the ArcCos() function to calculate the angle from 0 to 180 degrees whose cosine is equal to that number.

Syntax

result = ArcCos (number)

Parameters

number

A literal number, analog tagname, or numeric expression in the range of -1 to 1.

Example(s)

ArcCos(1) returns 0.

ArcCos(-0.5) returns 120.