Hyperbolic Functions

The hyperbolic functions calculate the hyperbolic sine, cosine, or tangent of an angle.

x

The angle in radians

sinh

hyperbolic sine (x) = (e^x - e^-x) / 2

cosh

hyperbolic cosine (x) = (e^x + e^-x) / 2

tanh

hyperbolic tangent (x) = (e^x - e^-x) / (e^x + e^-x)

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

void Display (double Angle);

int main () {
  Display (.08 * (double)(rand() % 100) - 4.0);
  Display (.08 * (double)(rand() % 100) - 4.0);
  Display (.08 * (double)(rand() % 100) - 4.0);
  return 0;
}

void Display (double Angle) {
  printf ("The hyperbolic sine of %f radians is %f\n",
          Angle, sinh (Angle));
  printf ("The hyperbolic cosine of %f radians is %f\n",
          Angle, cosh (Angle));
  printf ("The hyperbolic tangent of %f radians is %f\n\n",
          Angle, tanh (Angle));
}

The hyperbolic sine of -0.320000 radians is -0.325489
The hyperbolic cosine of -0.320000 radians is 1.051638
The hyperbolic tangent of -0.320000 radians is -0.309507

The hyperbolic sine of -1.600000 radians is -2.375568
The hyperbolic cosine of -1.600000 radians is 2.577464
The hyperbolic tangent of -1.600000 radians is -0.921669

The hyperbolic sine of 2.560000 radians is 6.429256
The hyperbolic cosine of 2.560000 radians is 6.506561
The hyperbolic tangent of 2.560000 radians is 0.988119