#include <iostream>
#include <cmath>
using namespace std;
int main() {
double v0, g = 9.8, R;
double theta = 45.0; // sudut optimal (derajat)
cout << "Masukkan kecepatan awal (m/s): ";
cin >> v0;
// Konversi sudut ke radian
double thetaRad = theta * M_PI / 180.0;
// Hitung jarak horizontal
R = (pow(v0, 2) * sin(2 * thetaRad)) / g;
cout << "Jarak horizontal terjauh = " << R << " meter" << endl;
return 0;
}
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