#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define C 6399593.626
#define E 0.0067394968
#define PI 3.14
void donusturme(float enlem,float boylam)
{
    float V;
    V=sqrt(1+((E)*cos(enlem*(180/PI))*cos(enlem*(180/PI))));
    printf("V sonucu=%.2f",V);

    float N;
    N=C/V;
    printf("N sonucu=%.2f",N);

    float sonuc;
    sonuc=(N)*cos(enlem*(180/PI))*cos(boylam*(180/PI));
    printf("Donusum sonucu=%.2f",sonuc);
}






int main()
{
  float enlem,boylam;
  printf("Lutfen enlem ve boylami giriniz!\n");
  scanf("%f%f",&enlem,&boylam);
  donusturme(enlem,boylam);
    return 0;
}