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A to Z of Excel Funcitons: the ACOSH Function

27 June 2016

Welcome to our regular blog post on the A to Z of Excel function. I bet you don’t know them all! Today we introduce you to the next function in line – ACOSH …

This function returns the inverse hyperbolic cosine of a number.  The inverse hyperbolic cosine is the value whose hyperbolic cosine is number, so ACOSH(COSH(number)) equals number.  Sounds like we will need to do a blog on COSH in the near future!

The syntax only has one argument:


Please see my example below:

Provided you follow the syntax and choose a number greater than or equal to 1, you can’t go wrong!

We’ll continue our A to Z of Excel Functions soon.  Keep checking back – there’s a new blog post every other business day.


A full page of the function articles can be found here.