Return arc tangent of a number

Contract
Return type	wob
No input parameters.

Water Contract
<method number.double.atan/>

See also: cos, acos, cosh, sin, asin, sinh, tan, tanh, atan2, radians_to_degrees, degrees_to_radians, double

Returns the arc tangent of a _subject of type double . May be used to convert a tangent value back into an angular measure in radians.

0.5773502691896257.<atan />.<radians_to_degrees />

29.999999999999996