Summary

The Excel ACOTH function returns the inverse hyperbolic cotangent of a number.

Purpose 

Get the inverse hyperbolic cotangent of a number

Return value 

The inverse hyperbolic cotangent of a number

Syntax

=ACOTH(number)
  • number - The number to get the inverse hyperbolic cotangent of.

How to use 

The Excel ACOTH function returns the inverse hyperbolic cotangent of a number. Given 2 as input, the function returns 0.549306144 as output.

=ACOTH(2) // returns 0.549306144

Explanation

The hyperbolic arc cotangent function is the inverse of the COTH function.

=ACOTH(COTH(x)) // returns x when x ≠ 0

The plot below shows the ACOTH function's output in Excel.

The plot of the hyperbolic arc cotangent function.

Notes:

  • The function returns a #NUM! Error for input greater than or equal to -1 and less than or equal to 1.

Image(s) courtesy of wumbo.net.

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Dave Bruns

Hi - I'm Dave Bruns, and I run Exceljet with my wife, Lisa. Our goal is to help you work faster in Excel. We create short videos, and clear examples of formulas, functions, pivot tables, conditional formatting, and charts.