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ExcelExcel 2013+

ACOTH function in Excel

Returns the hyperbolic arccotangent of a number

=ACOTH(number)

ACOTH syntax and parameters

One argument, one required.

  • numbernumberRequired

ACOTH examples

Formulas you'll actually reuse.

  1. Inverse hyperbolic cotangent — |x| must be greater than 1:

    =ACOTH(B2)

    Result0.5493

  2. Equal to ATANH of the reciprocal — the difference is zero:

    =ACOTH(B2) - ATANH(1 / B2)

    Result0

ACOTH in Google Sheets

Same name — your formula ports as-is.

Try ACOTH in the playground

Edit the example — nothing to install.

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

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ACOTH errors

What they mean — and the fixes.

  • #NUM!

    |x| is 1 or less — ACOTH is only defined outside −1…1.

Related functions

More ways Excel gets this done.