Description
The Microsoft Excel ATN function returns the arctangent of a number.
Syntax
The syntax for the ATN function in Microsoft Excel is:
Atn( number )
Parameters or Arguments
- number
- A numeric expression that is used to calculate the arctangent.
Applies To
- Excel 2016, Excel 2013, Excel 2011 for Mac, Excel 2010, Excel 2007, Excel 2003, Excel XP, Excel 2000
Type of Function
- VBA function (VBA)
Example (as VBA Function)
The ATN function can only be used in VBA code in Microsoft Excel.
Let's look at some Excel ATN function examples and explore how to use the ATN function in Excel VBA code:
Atn(2) Result: 1.10714871779409 Atn(2.51) Result: 1.19166451926354 Atn(-3.25) Result: -1.27229739520872
For example:
Dim LNumber As Double LNumber = Atn(210)
In this example, the variable called LNumber would now contain the value of 1.56603445802574.
