#include <stdio.h>
#include <math.h>
 
int main() {
    int s;       // sudut peluncuran (dalam derajat)
    int v;       // kecepatan awal
    float g = 10; // gravitasi
 
    // Input sudut dan kecepatan
    scanf("%d", &s);
    scanf("%d", &v);
 
    // Konversi derajat ke radian untuk fungsi sin
    float radian = s * M_PI / 180.0;
 
    // Hitung jarak menggunakan rumus gerak parabola
    float jarak = (v * v * sin(2 * radian)) / g;
 
    // Output hasil dengan satu angka di belakang koma
    printf("%.1f\n", jarak);
 
    return 0;
}
 

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

MjMKMTAK

23
10