Related Functions:

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.




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

  The absolute value of number must be less than 2^27


  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

trigonometry_triangleThe cosecant is the reciprocal of sine. For the simple right-angle 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:  

    \[   csc(A) = \frac 1{sin(A)}   \]

See Wikipedia See Wikipedia for more information on Trigonometric Ratios.