#include <iostream>
#include <cmath>
using namespace std;
 
int main() {
    // Konstanta gravitasi
    const double g = 9.8;
 
    // Input dari user
    double v0, angle_deg;
    cout << "Masukkan kecepatan awal (m/s): ";
    cin >> v0;
    cout << "Masukkan sudut elevasi (derajat): ";
    cin >> angle_deg;
 
    // Konversi sudut ke radian
    double angle_rad = angle_deg * M_PI / 180.0;
 
    // Hitung jarak horizontal maksimum
    double R = (v0 * v0 * sin(2 * angle_rad)) / g;
 
    // Tampilkan hasil
    cout << "Jarak horizontal maksimum: " << R << " meter" << endl;
 
    return 0;
}
 
 

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