## What is the ACOSH function in Excel?

The **ACOSH ** function is one of the math functions of Excel. It returns the inverse hyperbolic cosine of a number.

The domain of **ACOSH** is the interval [1,infinit] and it is undefined elsewhere.

We can find this function in **Math&trig** of insert function Tab.

## How to use ACOSH function in excel

- Click on an empty cell (like F5 )

2. Click on fx icon (or press** shift+F3**)

3. In the insert function tab you will see all functions

4. Select **math and trig** category

5. Select **ACOSH **function

6. Then select **ok**

7. In the function arguments Tab you will see ** ACOSH **function

8. In the Number section you can enter any real number equal to or greater than 1.

9. You will see the result in formula result section ( **ACOSH** (1)=0)

### Examples of **ACOSH **function in excel

**Example 1:**

**How to use ACOSH function in excel**?

You can see examples of ACOSH function below:

**acosh**(1) ----->>>>answer is 0
**acosh**(10) ----->>>>answer is 2.993
**acosh**(100) ----->>>>answer is 5.298
**acosh**(1000) ----->>>>answer is 7.600
**acosh**(10000) ----->>>>answer is 9.903

**Example 1:**

**How to use ACOSH function in excel**?

**math.acosh(a)**

### How to plot Y=ACOSH(X) with python code in excel

we can use Python code for acosh function in excel:

```
import math
import numpy as np
import matplotlib.pyplot as plt
x =np.linspace(1,10000, 1000)
lenx=len(x)
y=[]
for i in range(lenx):
y.append(math.acosh(x[i]))
i +=1
plt.plot(x,y)
plt.show()
```

## What is the purpose of **ACOSH** function?

It returns the inverse hyperbolic cosine of a number.

## What is the Return value of **ACOSH** function?

It returns a number.

## How many arguments does **ACOSH** function have?

This function has just **1** Argument.

The **argument **of ACOSH function is **number**.

In the Number section you can enter any real number equal to or greater than 1.

The argument of ACOSH function is **required **and not optional.

```
ACOSH(number) = number
```

## Which version of excel supports **ACOSH** function?

This function is available for all excel **versions **(2003-2019)