#include <iostream> 
#include <cmath> 
using  namespace  std; 
 
int  main( )  { 
    double  kecepatan, sudut_derajat, tinggi_pohon; 
    const  double  g =  9.8 ; 
 
    cout  <<  "Masukkan kecepatan awal burung (m/s): " ; 
    cin  >>  kecepatan; 
 
    cout  <<  "Masukkan sudut terbang burung (derajat): " ; 
    cin  >>  sudut_derajat; 
 
    cout  <<  "Masukkan tinggi pohon (meter): " ; 
    cin  >>  tinggi_pohon; 
 
    // Konversi sudut ke radian 
    double  sudut_radian =  sudut_derajat *  M_PI /  180.0 ; 
 
    // Hitung ketinggian maksimum burung 
    double  tinggi_maks_burung =  pow ( kecepatan *  sin ( sudut_radian) , 2 )  /  ( 2  *  g) ; 
 
    cout  <<  "\n === HASIL PREDIKSI ==="  <<  endl; 
    cout  <<  "Ketinggian maksimum burung : "  <<  tinggi_maks_burung <<  " meter"  <<  endl; 
    cout  <<  "Tinggi pohon               : "  <<  tinggi_pohon <<  " meter"  <<  endl; 
 
    if  ( tinggi_maks_burung >  tinggi_pohon)  { 
        cout  <<  "Prediksi: Burung dapat mencapai ketinggian lebih tinggi dari pohon."  <<  endl; 
    }  else  { 
        cout  <<  "Prediksi: Burung tidak dapat mencapai ketinggian pohon."  <<  endl; 
    } 
 
    return  0 ; 
} 
 
 
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