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ATAN

 

Syntax: @ATAN(X)

X = a numeric value expressed in radians.

@ATAN returns the 2-quadrant arc tangent of angle X. The result is the angle (in radians) whose tangent is X and ranges from tex2html_wrap_inline15926 to tex2html_wrap_inline15879 . To convert radians to degrees, use the @DEGREES function.

Examples:

@ATAN(.5) = 0.463647609

@ATAN(J44) = -0.785398163, where J44 = -1

@DEGREES(@ATAN(U6)) = 87.70939, where U6 = 25


next up previous contents index
Next: ATAN2 Up: A Function Reference Previous: ASINH

NExS User's Guide, Version 1.4.5
Grey Trout Software
11 April 1999