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