- :floating
- :complex
atan
calculate the inverse tangent of given angle
Parameters
atan angle :integer :floating :complex :rational :quantity
Returns
Examples
copyprint atan 0 ; 0.0 print atan 0.3 ; 0.2914567944778671 print atan 1.0 ; 0.7853981633974483
copyatan to :complex @[pi 1] ; => 1.287340574324392+0.08505998507745416i