CODE EXAMPLE FOR CPP

cos trigonometric function

// C++ program to illustrate 'cos trigonometric function'
  
#include <iostream>
#include <math.h>
using namespace std;
  
int main() {

    double x = 2.3;
  
    cout << "Cosine value of x = 2.3 is: "
         << cos(x) << endl;
  
    return 0;
}