Cos Function

Syntax:

float cosf(float arg);

double cos(double arg);

long double cosl(long double arg);

Example:

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

  int main()
  {
    double x = -2.0;
	
    do {
      printf("Cosine of %f is %f.\n", x, cos(x));
      x += 0.2;
    } while(x<=2.0);

    return 0;
  }