#include <iostream>
#include <math.h>
#include <fstream>

using namespace std;

int main()
{
    double a = 9.8;  // units = meters
    
    double radians;
    double angle, velocity;
    double vx, vy, x, y;
    float time;
    ofstream outfile("traj.out");
    
    cout << "Enter velocity: ";
    cin >> velocity;
    
    cout << "Enter angle: ";
    cin >> angle;
    
    radians = angle*M_PI/180.0;
    
    vx = velocity * cos(radians);
    vy = velocity * sin(radians);
    
    for(time=0; time < .5; time += .01)
    {
        x = vx * time;
	y = vy * time - 0.5 * a * time * time;
	cout << "Time: " << time  << "  x: " << x
	     << "  y: " << y << endl;
	outfile << "Time: " << time  << "  x: " << x
	     << "  y: " << y << endl;    
    }
    
    cout << "Vx = " << vx << "  Vy = " << vy
         << "  Veloc= " << velocity << "   Angle= " << angle
	 << "   Rad= " << radians << endl;
	 
    outfile << "Vx = " << vx << "  Vy = " << vy
         << "  Veloc= " << velocity << "   Angle= " << angle
	 << "   Rad= " << radians << endl;
	
    outfile.close(); 
    return 0;
}