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WorksheetFunction.Acos method (Excel)

Returns the arccosine, or inverse cosine, of a number. The arccosine is the angle whose cosine is Arg1. The returned angle is given in radians in the range 0 (zero) to pi.

Syntax

expression.Acos (Arg1)

expression A variable that represents a WorksheetFunction object.

Parameters

Name Required/Optional Data type Description
Arg1 Required Double The cosine of the angle you want, and must be from -1 to 1.

Return value

Double

Remarks

If you want to convert the result from radians to degrees, multiply it by 180/PI() or use the Degrees method.

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