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ExcelExcel 2013+

CSC function in Excel

Returns the cosecant of an angle

=CSC(number)

CSC syntax and parameters

One argument, one required.

  • numbernumberRequired

CSC examples

Formulas you'll actually reuse.

  1. Cosecant of 30° (π/6 radians) — the reciprocal of SIN:

    =CSC(PI()/6)

    Result2

  2. Working from degrees? Convert first with RADIANS:

    =CSC(RADIANS(A2))

    Result1.4142

CSC in Google Sheets

Same name — your formula ports as-is.

Try CSC in the playground

Edit the example — nothing to install.

Preloaded with the CSC formula from Example 1 — change anything and watch it respond.

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CSC errors

What they mean — and the fixes.

  • #DIV/0!

    CSC(0) divides by SIN(0) — the angle can't be a multiple of π.

Related functions

More ways Excel gets this done.