Altair® Monarch®

 

Function: Acos

Description

Returns the arccosine, also known as inverse cosine, value (in radians) of a given number.

Syntax

Acos(number)

Arguments

Number must be a value between => -1 and =< 1

Return value

This function returns a value in radians.

Calculated field example

Acos returns the following for these values of x:

x

acos(x)

-1.000

π ≈ 3.142

-√3/2 ≈ -0.866

5π/6 ≈ 2.618

-√2/2 ≈ -0.707

3π/4 ≈ 2.356

-1/2 ≈ -0.500

2π/3 ≈ 2.094

0.000

π/2 ≈ 1.571

1/2 = 0.500

π/3 ≈ 1.047

2/2 ≈ 0.707

π/4 ≈ 0.785

3/2 ≈ 0.866

π/6 ≈ 0.524

1.000

0.000