Excel ACOSH Function

The Excel ACOSH function returns inverse hyperbolic cosine of a number. The inverse hyperbolic cosine of x is defined as:

The ACOSH function is a built-in function in Excel that is categorized as a Math/Trig Function. It can be used as a worksheet function in Excel. As a worksheet function, the ACOSH function can be used as part of a formula in a worksheet cell.

Syntax

ACOSH(number)

Parameters

Return Value

Returns the inverse hyperbolic cosine of a value.

Notes

• If the argument is less than 1, ACOSH returns #NUM! error.
• If the argument is a non-numeric value, ACOSH returns #VALUE! error.

Example: Using as Worksheet Function

The example below shows how to use the ACOSH function as worksheet function.

Based on the Excel spreadsheet above, the output of the following worksheet formula will be:

=ACOSH(B5)
Result: 0

=ACOSH(B6)
Result: 1.316957897

=ACOSH(B7)
Result: 1.762747174

=ACOSH(B8)
Result: 2.063437069

=ACOSH(B9)
Result: 2.29243167

=ACOSH(B10)
Result: 2.993222846

=ACOSH(B11)
Result: 4.605070171