Csc-func
The csc(x) function returns value of cosecant for each value of the given x. This and other trigonometric functions can take values in radians, degrees, and gradian. The units are determined by the system.math.angularunits object property (which can also be set in the Options dialog box).
double csc(double x)
x
The function returns the cosecant of the argument. For x of zero, the function returns missing value.
val = csc(-10); val = ; //should return 1.8381639608897
sin, cos, tan, sin, secant