VBA/Excel/Access/Word/Math Functions/Atn

Atn(number) returns The arctangent of number in radians.

   <source lang="vb">

Sub mathDemo2()

  Debug.Print Atn(1)

End Sub

</source>
   
  

Atn() Returns the arctangent of a number (radians).

   <source lang="vb">

Sub mathFDemo()

   Debug.Print 4 * Atn(1)

End Sub

</source>