Returns the arccosine, in radians, of a number between -1 and 1, inclusive.

Syntax

ACos ( numExpr )

Elements

numExpr

A numeric expression with a value between -1 and 1, inclusive.

ACos returns the arccosine, in radians, of the value of numExpr.

The range of the return value is zero to pi, inclusive.

The data type of the return value is Double.

If the value of numExpr is not in the range -1 to 1, inclusive, the function raises an error.

Usage

The arccosine of a number is the angle, in radians, whose cosine is equal to the value of that number.

Language cross-reference

@Acos function in formula language

Example
See Also

LotusScript Language Reference: A through D
Constants
ASin function
ATn function
ATn2 function
Cos function
Sin function
Tan function

Glossary