Program to find the sin cos tan value using math dot h

#include <math.h>

#include <stdio.h>

main()

  {

    double val = 30;

    do {

      printf("Cosine of %.f is %.2f\n", val, sin(val));

      val += 5;

    } while(val<=100);

    //return 0;

    getch();

  }