C cosh()

The cosh() function computes the hyperbolic cosine of a number.

cosh() Function Prototype

double cosh(double x)

The cosh() function takes a single argument (angle in radians) and returns the hyperbolic cosine of that angle as type double.


The cosh() function is defined in math.h header file.

In order to find the cosh() of long double or float numbers, you can use the following prototype.

long double coshl( long double arg);
float coshf( float arg);

Example: C cosh()

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

int main ()
{
    double x, result;

    x = 0.5;
    result = cosh(x);
    printf("Hyperbolic cosine of %lf (in radians) = %lf\n", x, result);

    x = -0.5;
    result = cosh(x);
    printf("Hyperbolic cosine of %lf (in radians) = %lf\n", x, result);

    x = 0;
    result = cosh(x);
    printf("Hyperbolic cosine of %lf (in radians) = %lf\n", x, result);

    x = 1.5;
    result = cosh(x);
    printf("Hyperbolic cosine of %lf (in radians) = %lf\n", x, result);

    return 0;
}

Output

Hyperbolic cosine of 0.500000 (in radians) = 1.127626
Hyperbolic cosine of -0.500000 (in radians) = 1.127626
Hyperbolic cosine of 0.000000 (in radians) = 1.000000
Hyperbolic cosine of 1.500000 (in radians) = 2.352410