#include "stdafx.h" 
#include <iostream>
 #include <math.h>
#include<stdio.h>
using namespace std;
 #define PI 3.14159265
int main ()
{
double a;
cout<<"Input a: ";
cin>>a;
cout<<endl;
 if (  (a*cos((78.0)*PI / 180.0 ))<((0.2)*cos ( (81.0) * PI / 180.0 ))  )
{
cout<<"a*cos(78) < 0,2cos(81)"; 
}else
 {
if ((a*cos ( (78.0) * PI / 180.0 ))==((0.2)*cos ( (81.0) * PI / 180.0 )))
{
cout<<"a*cos(78) = 0,2cos(81)";
}else
{
cout<<"a*cos(78) > 0,2cos(81)";
}} 
system("PAUSE");
return 0;}