ArcTan (PQL)
                                    Returns the arc tangent of a number.
- Returned Output: Numeric
 - Library: PQL \ Common \ Math
 - Version: 2018.00.000
 - Compatibility: 
- Can be combined with and other PQL function throughout the application.
 - It CANNOT be used with MDX or VBA functions. But it can be used on MDX-based content in other parts of the application.
 
 
Syntax
ArcTan( <Numeric> )
                                    
                                    * Click on the function's arguments above for more details on the input values.
Comments
- The numeric value must be represented in radians.
 - Use the function for trigonometric calculations.
 
Different Function types
- This function is like the Excel Arc Tangent function.
 
Examples
This example returns 0.7853981633974483
ArcTan(1)