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# ACOSH

## Name

ACOSH --

## Synopsis

    ACOSH(x)

## Description

ACOSH function calculates the inverse hyperbolic cosine of @x; that is the value whose hyperbolic cosine is @x. If @x is less than 1.0, ACOSH() returns the #NUM! error.

This function is Excel compatible.

## Examples

ACOSH(2) equals 1.31696.

ACOSH(5.3) equals 2.35183.

## See also

ACOS, ASINH, DEGREES, RADIANS.

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