Skip to content
Google Sheets

ACOTH function in Google Sheets

Returns the inverse hyperbolic cotangent of a value, in radians. Must not be between -1 and 1, inclusive..

=ACOTH(value)

ACOTH syntax and parameters

One argument, one required.

  • valuenumberRequired

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 Excel

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.

Loading the editor…

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 Google Sheets gets this done.