CSC()
CSC() — Returns the cosecant of an angle specified in radians.
Synopsis
CSC(  {numeric-expression}  ) 
Description
The CSC() function returns the cosecant 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).