Type:
tan: real -> real
Call syntax:
tan( angle)
Description:
tan implements the trigonometric function
tangent
its parameter is given in radians.
Error conditions:
Because the tangent function is not defined
for parameter values with a cosine of zero,
calling tangent with parameter values
pi/2+2k*pi (for any integer k) leads to an error condition.
Example:
> tan(1.5707963)
Error in command-line:
Invalid argument value
(occured while executing function "tan"