In this C++ tutorial, you will learn how to find hyperbolic cosine of given angle using cosh() function of cmath, with syntax and examples.

## C++ cosh()

C++ cosh() returns hyperbolic cosine of angle given in radians.

## Syntax

The syntax of C++ cosh() is

`cosh(x)`

where

Returns

The return value depends on the type of value passed for parameter x.

The return value of cosh(x) is

• double if x is double or IntegralType.
• float if x is float.
• long double if x is long double.

The synopsis of cosh() function is

```double cosh(double x);
float cosh(float x);
long double cosh(long double x);
double cosh(T x); // for integral type argument values```

cosh() is a function of cmath library. Include cmath library at the start of program, if using cosh() function.

## Example

In this example, we

C++ Program

```#include <iostream>
#include<cmath>
using namespace std;

int main() {
double x;
cout << "Enter angle (radians) : ";
cin >> x;

double result = cosh(x);
cout << "cosh(" << x << ") : " << result << endl;
}```

Output

```Enter angle (radians) : 2
cosh(2) : 3.7622
Program ended with exit code: 0```
```Enter angle (radians) : 0
cosh(0) : 1
Program ended with exit code: 0```
```Enter angle (radians) : -2
cosh(-2) : 3.7622
Program ended with exit code: 0```

## Conclusion

In this C++ Tutorial, we learned the syntax of C++ cosh(), and how to use this function to find the hyperbolic cosine of given angle, with the help of examples.