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