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SALIERI Language - tan

tan: real -> real

Call syntax:
tan( angle)

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.

> tan(1.5707963)
Error in command-line:
Invalid argument value
(occured while executing function "tan"

See also: sin, cos, arctan.

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