Answer to Question #251795 in C++ for aneeza riaz

Question

Find and display the values of both sides of the following mathematical series expression and

an absolute difference of both sides. User can input either of angles in degree 90, 60, 30 etc.

sin(x) = x −

x

3

3!

+

x

5

5!

−

x

7

7!

+

x

9

9!

Answer 1

#include <iostream>
#include <cmath>


using namespace std;


long getFactorial(int n) {
    int c;
    long factr = 1;
    for (int c = 1; c <= n; c++) {
        factr = factr * c;
    }
    return factr;
}


int main()
{
    double x =90;
    double res;
    res = sin(x);
    cout<<"\nResult 1: "<<res;
    double a, b, c, d;
    a=(pow(x,3)/getFactorial(3));
    b=(pow(x,5)/getFactorial(5));
    c=(pow(x,7)/getFactorial(7));
    d=(pow(x,9)/getFactorial(9));
    double res2=x-a+b-c+d;
    cout<<"\nResult 2: "<<res2;
    
    return 0;
}