WorksheetFunction.Acos Method
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.
Namespace: Microsoft.Office.Interop.Excel
Assembly: Microsoft.Office.Interop.Excel (in Microsoft.Office.Interop.Excel.dll)
Syntax
'Declaration
Function Acos ( _
Arg1 As Double _
) As Double
'Usage
Dim instance As WorksheetFunction
Dim Arg1 As Double
Dim returnValue As Double
returnValue = instance.Acos(Arg1)
double Acos(
double Arg1
)
Parameters
Arg1
Type: System.DoubleThe cosine of the angle you want and must be from -1 to 1.
Return Value
Type: System.Double
Remarks
If you want to convert the result from radians to degrees, multiply it by 180/PI() or use the Degrees method.