Calculate hyperbolic cosine:how to use cosh
#include <stdio.h>
#include <math.h>
#define PI 3.14159265
int main ()
{
double p, result;
p = 45;
result = cosh ( p * PI / 180);
printf ("Hyperbolic cosine of %lf degrees = %lf\n", p, result );
return 0;
}
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