##### Using the ACOSH function:

The arguments for the ACOSH function are:

Argument | Required? | Description |
---|---|---|

number | Required | Any real number equal to or greater than 1. |

The ACOSH function returns the inverse hyperbolic cosine of a number. 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.

ACOSH takes 1 required argument and no optional arguments:

ACOSH(number)

The arguments for the ACOSH function are:

Argument | Required? | Description |
---|---|---|

number | Required | Any real number equal to or greater than 1. |