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C++ Math cosh()

The function finds the hyperbolic cosine of an angle given in radian.

Mathematically,

coshx = e^x+ e^-x/2

Syntax

Suppose the hyperbolic angle is 'x':

float cosh(float x);
double cosh(double x);
long double cosh(long double x);
double cosh(integral x);

Parameter

x: The value of angle whose hyperbolic cosine is to be calculated.

Return value

It returns the hyperbolic cosine of angle given in radian.

Example 1

Let's see a simple example when the value of x is of integral type.

#include <iostream>
#include<math.h>
using namespace std;
int main()
{
   int x=45;
   float radian=x*3.14/180;
   std::cout << "Value of degree is :" <<x<<std::endl;
   cout<<"cosh(radian): "<<cosh(radian);
   return 0;
}

Output:

Value of degree is :45
cosh(radian): 1.32426

In this example, cosh() computes the hyperbolic cosine of an angle 45 and returns the value 1.324.

Example 2

Let's see another simple example.

#include <iostream>
#include<math.h>
using namespace std;
int main()
{
   float x=25.5;
   float radian=x*3.14/180;
   std::cout << "Value of degree is: " << x<<std::endl;
   cout<<"cosh(radian): "<<cosh(radian);
   return 0;
}

Output:

Value of degree is: 25.5
cosh(radian): 1.10058

Next TopicC++ Math Functions

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