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.
Parameter Description
Num Return the arc tangent of this numeric value.
See Also: Cos, Sin, Tan.
Example:
Sub Main Debug.Print Atn(1)*4 ' 3.1415926535898 End Sub