C library function - cosh()

Description

The C library function double cosh(double x) returns the hypebolic cosine of x.

Declaration

Following is the declaration for cosh() function.

double cosh(double x)

Parameters

• x -- This is the floating point value.

Return Value

This function returns hyperbolic cosine of x.

Example

The following example shows the usage of cosh() function.

#include <stdio.h>
#include <math.h>

int main ()
{
   double x;

   x = 0.5;
   printf("The hyperbolic cosine of %lf is %lf\n", x, cosh(x));

   x = 1.0;
   printf("The hyperbolic cosine of %lf is %lf\n", x, cosh(x));

   x = 1.5;
   printf("The hyperbolic cosine of %lf is %lf\n", x, cosh(x));

   return(0);
}

Let us compile and run the above program, this will produce the following result:

The hyperbolic cosine of 0.500000 is 1.127626
The hyperbolic cosine of 1.000000 is 1.543081
The hyperbolic cosine of 1.500000 is 2.352410