TAN

Syntax: TAN (angle)     angle <> (2n+1) * /2 (n=0,1,2,...)
Location: QL ROM

This function calculates the tangent of an angle given in radians.

Due to the periodic nature of this function function, values for angle should really be in the range -PI/2 < angle < PI/2.

CROSS-REFERENCE:
SIN, COS, COT, ASIN, ACOS, ATAN and ACOT are other common trigonometrical functions. 
RAD converts degrees into radians, DEG vice-versa.
