Format: var = ATN (expr)
Supported by: Quest Super BASIC 1.4
Similar commands: COMX BASIC V1.00, Pecom 32 BASIC, Pecom 64 BASIC 1.0 and 4.0, Quest Super BASIC 3.0, 5.0 and 6.0, RCA BASIC3 V1.1, Telmac SBASIC v 24.3: ATN
This function which has the same meaning as ARCTAN (expression) returns the angle (expressed in degrees) whose tangent is equal to the value of the expression.
PR ATN (1)
since TAN (0.785399) = TAN PI/4 = TAN 45°