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Fn.ArcTan

Returns the arctangent of a given value.
Syntax
          
Fn.ArcTan(X:RAT):RAT

          

Description
This function returns the arctangent of X rounded to the current global accuracy.

Example
Fn.SetAccuracy(20);
R := Fn.ArcTan(1/2);
Dec(R, 30);

0.46364760900080611621
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See Also