#include <iostream>
#include <cmath>

using namespace std;

const double PI = 3.14159;

int main()
{
    double kat, radiany;
    int n;
    cout << "Podaj miare kata: ";
    cin >> kat;
    cout << "Wybierz:\n\t1. sinus,\n\t2. cosinus,\n\t3. tangens,\n\t4. cotangens\n";
    cin >> n;

    // zamiana na radiany:
    radiany = kat * PI / 180;

    while(n < 1 || n > 4)
    {
        cout << "Podales nieprawidlowa komende, wpisz jeszcze raz: ";
        cin >> n;
    }

    switch(n)
    {
    case 1:
        cout << "Sinus kata " << kat << " stopni wynosi " << sin(radiany) << endl;
        break;
    case 2:
        cout << "Cosinus kata " << kat << " stopni wynosi " << cos(radiany) << endl;
        break;
    case 3:
        cout << "Tangens kata " << kat << " stopni wynosi " << tan(radiany) << endl;
        break;
    case 4:
        cout << "Cotangens kata " << kat << " stopni wynosi " << 1 / tan(radiany) << endl;
    }

    return 0;
}