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Applies to: 
Calculated column
Calculated table
Measure
Visual calculation
Returns the inverse hyperbolic cosine of a number. The number must be greater than or equal to 1. The inverse hyperbolic cosine is the value whose hyperbolic cosine is number, so ACOSH(COSH(number)) equals number.
Syntax
ACOSH(number)
Parameters
| Term | Definition |
|---|---|
number |
Any real number equal to or greater than 1. |
Return value
Returns the inverse hyperbolic cosine of a number.
Remarks
This function is not supported for use in DirectQuery mode when used in calculated columns or row-level security (RLS) rules.
Example
| Formula | Description | Result |
|---|---|---|
= ACOSH(1) |
Inverse hyperbolic cosine of 1. | 0 |
= ACOSH(10) |
Inverse hyperbolic cosine of 10. | 2.993228 |