Acos function

Syntax

Acos(value)

Description

Use the Acos function to calculate the arccosine of the given value, that is, the size of the angle whose cosine is that value.

Parameters

Parameter	Description
value	Any real number between -1.00 and 1.00 inclusive, the range of valid cosine values. If the input value is outside this range, an error message appears at runtime ("Decimal arithmetic error occurred. (2,110)"). Adjust your code to provide a valid input value.

Returns

A value in radians between 0 and pi.

Example

The following example returns the size in radians of the angle whose cosine is 0.5:

&MY_ANGLE = Acos(0.5);