Purpose
Returns the tangent of the specified angle expressed in degrees. 
Parameters
x is a floating-point value representing an angle and cannot be an odd multiple of 90. 
Examples
TAND(45.0)    /* returns 1.0 */
Restrictions
A TAND operation on floating-point decimal data is actually performed using the floating-point binary operation. Thus, the range of the operands and the result of the operation are limited to the ranges for floating-point binary numbers. 
 
Description
The TAND function returns the tangent of the angle x expressed in degrees. The result has the same data type as x.