Зимовец - 1

#include <iostream>
#include <cmath>
using namespace std;

double workA(double F, double L, double alfa){
    double A = F * L * cos(alfa);
}

int main()
{
    double F, L, alfa, beta, A1, A2;
    cin >> F >> L >> alfa >> beta;
    A1 = workA(F, L, alfa);
    A2 = workA(F, L, beta);
    cout << A1 << A2;
    return 0;
}