Takes the arcsine, in radians, of number. Results in
system-missing if number is not between -1 and 1 inclusive.
— Function: ARTAN (number)
— Function: ATAN (number)
Takes the arctangent, in radians, of number.
— Function: COS (angle)
Takes the cosine of angle which should be in radians.
— Function: SIN (angle)
Takes the sine of angle which should be in radians.
— Function: TAN (angle)
Takes the tangent of angle which should be in radians.
Results in system-missing at values
of angle that are too close to odd multiples of pi/2.
Portability: none.