# ACOSH

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## Content



This function calculates the inverse hyperbolic cosine of the specified value.

## Syntax

ACOSH(*value*)

## Arguments

For the argument, you can specify any real number greater than or equal to 1.

## Remarks

This function is the inverse of the hyperbolic cosine, so `ACOSH(COSH(_n_))` gives the result *n*.

## Data Types

Accepts numeric data. Returns numeric data.

## Examples

`ACOSH(B3)`
`ACOSH(R3C2)`
`ACOSH(1)` gives the result 0
`ACOSH(10)` gives the result 2.9932228461
`ACOS(R3C2)`

## Version Available

This function is available in product version 1.0 or later.

## See Also

[ACOS](/spreadnet/docs/latest/online-formula/formulas-functionsall/formulas-functsAtoC/FunctionACOS) \| [ASINH](/spreadnet/docs/latest/online-formula/formulas-functionsall/formulas-functsAtoC/FunctionASINH) \| [Math and Trigonometry Functions](/spreadnet/docs/latest/online-formula/formulas-overview/formulas-functs/formulas-functtypes/formulas-functsmathtrig)