Question

Write c++ codes for the following mathmatical function :

Square root

Sin

Ln

Answer 1

C++ supports many mathematical functions.All mathematical functions are defined in cmath library.

1)Square root

Sol) we have to use sqrt() function to  find square root of a number .

C++ Code :

#include <iostream>
#include <cmath>
using namespace std;
int main(){
   int n;
   cout << "Enter a number to find square root : ";
   cin >> n;
   cout << "Square root of " << n << " is " << sqrt(n);
}

Output :

2) sin function

Sol) We have to use sin() function to find the sin value of a number.

C++ Code :

#include <iostream>
#include <cmath>
using namespace std;
int main(){
   double n;
   cout << "Enter a number to find sin value : ";
   cin >> n;
   cout << "sin value of " << n << " is " << sin(n);
}

Output

3) ln

Sol) ln is nothing but natural logarithm.Using log() function we can calculate ln value.

C++ Code :

#include <iostream>
#include <cmath>
using namespace std;
int main(){
   double n, ln_value;
   n = 3.2;
    ln_value = log(n);
   cout << "log(" << n << ") = " << ln_value;
}

Output :

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