#include <iostream>
#include <cmath>
 
using namespace std;
 
// Fungsi untuk menghitung waktu terbang
double waktuTerbang(double v0, double sudutDerajat) {
    const double g = 9.8; // percepatan gravitasi (m/s^2)
    double sudutRadian = sudutDerajat * M_PI / 180.0;
    double waktu = (2 * v0 * sin(sudutRadian)) / g;
    return waktu;
}
 
int main() {
    double kecepatanAwal, sudut;
 
    cout << "Masukkan kecepatan awal peluncuran (m/s): ";
    cin >> kecepatanAwal;
 
    cout << "Masukkan sudut peluncuran (derajat): ";
    cin >> sudut;
 
    double waktu = waktuTerbang(kecepatanAwal, sudut);
 
    cout << "Waktu yang dibutuhkan untuk mencapai jarak horizontal terjauh: "
         << waktu << " detik" << endl;
 
    return 0;
}
 

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