#include <. windows.h .>
#include <. string .>
#include <. iostream>
#include <. iomanip>
#include <. math.h>
using namespace std;
int main(int argc, char **argv)
{
system("chcp 1251 > nul"); // Руссификация сообщений
setlocale(LC_ALL, "Russian");
double x; cout << "Input now X= "; cin >> x;
double ImCool= 1.0 / cos(x) + sqrt(sin(x*x) / (x*x-16.0) );
cout << "Mister Teacher, ImCool= " << ImCool << end;
system("pause"); // system("pause > nul");
return 0;
}