Atn Function

Syntax
Atn(Num)
Group
Math
Description
Return the arc tangent. This is the number of radians. There are 2*Pi radians in a full circle.
Parameters Description
Num Return the arc tangent of this numeric value.
See Also
Cos, Sin, Tan

Sub Main
    Debug.Print Atn(1)*4 ' 3.1415926535898
End Sub