Author: Oscar Cronquist Article last updated on September 12, 2018

The CSC function calculates the cosecant of an angle (radians). The CSC function returns the same value as 1/SIN(number).

Formula in cell C3:


Excel Function Syntax



number Required. An angle specified in radians.


The CSC function returns

  • #VALUE error value if number is non-numeric value.
  • #NUM! error value if number is equal or larger than 2^27.