Related Functions:
 SIN Function
 SEC Function
 COT Function
The CSC function returns the cosecant of an angle specified in radians.
 This function was introduced in Excel 2013 and so is not available in earlier versions.
Syntax
=CSC(number)
Arguments
Argument  Description  

number  The angle, in radians, for which you want the cosecant

Examples
A  B  C  

1  Formula  Result  Notes 
2  =CSC(15)  1.538  Returns the cosecant of 15 
3  =CSC(6)  3.578899547  Returns the cosecant of 6 
4  =CSC(RADIANS(45))  1.414213562  Returns the cosecant of 45 degree angle 
Note: If the angle is in degrees, you need to be convert it to radians before supplying it to the CSC function. You can convert it, using the RADIANS function: =RADIANS(degrees)
Common Function Error(s)
Problem  What went wrong 

#VALUE!  Occurs if the supplied number argument is not recognized as a numeric value 
#NUM!  Occurs if the supplied number argument is less than 2^27 or is greater than 2^27 
#DIV/0!  Occurs if the supplied number argument is equal to zero 
The cosecant is the reciprocal of sine. For the simple rightangle triangle at right, the cosecant of angle A is equal to the hypotenuse (h), divided by the opposite side (a). The formula for calculating cosecant is:
See Wikipedia See Wikipedia for more information on Trigonometric Ratios.