SEC()
SEC() — Returns the secant of an angle specified in radians.
Synopsis
SEC(  {numeric-expression}  ) 
Description
The SEC() function returns the secant of a specified angle as a FLOAT value. The angle must be specified in radians as
    a numeric expression.
Examples
The following example returns the secant, cosecant, and cotangent of angles from 0 to 90 degrees (where the angle is
    specified in radians).