ATAN(A)
Returns the inverse tangent (atan) of A (result is in Radians)
Float ATAN(Float A)
A - Float value. If it is not of type float, it is implicitly converted to type float.
Inverse tangent (atan) of A (result is in Radians)
> PRINT RAD_TO_DEG(ATAN(0))
0.000000
> PRINT RAD_TO_DEG(ATAN(0.5))
26.565050
> PRINT RAD_TO_DEG(ATAN(1))
45.000000