Atn  
 
 

Returns the arctangent of a number. The arctangent is the angle whose tangent is number.

See also Tan, Sin, Cos, and Pi.

 
 
  Syntax  
 
Atn(number)

number

Tangent of the angle you want.

 
 
  Usage  
 

The range of the result is -/2 to /2 radians. To convert degrees to radians, multiply degrees by /180. To convert radians to degrees, multiply radians by 180/.





 
 
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