#include <iostream> #include <cmath> using namespace std; int main() { int n = 0; double sum = 0; double sumsum = 0; const double Pi = 3.1415; cout << "\tСумма 1/sin(1) + 1/(sin(1) + sin(2)) + … + 1/(sin(1)+sin(2)+…+sin(n))\n"; cout << "Введите n: "; cin >> n; for(int i = 1; i <= n; i++) { sum += sin((i)*(Pi/180)); sumsum += 1/sum; } cout << "Сумма:" << sumsum << endl; return 0; }