Anthony's Code

#include <iostream>
#include <iomanip>
#include <cmath>
#include <cmath>
using namespace std;

int main()
{

int A, B, C, dec;
double f_first, f_second, f_third, x_first, x_second, x_third;

        cout << setw(60) << "Function Calculator\n\n";
        cout << "Welcome to the Function Calculator. First we will calculate the value of a quadratic function for three different values of x.\n\n";
        cout << "Please enter a value for A: ";
        cin >> A;
        cout << "Please enter a value for B: ";
        cin >> B;
        cout << "Please enter a value for C: ";
        cin >> C;
        cout << "Please enter the desired number of decimal places of accuracy: ";
        cin >> dec;

        cout << setprecision(dec) << fixed;
        cout << "\nPlease enter a value for x: ";
        cin >> x_first;
        f_first = A*pow(x_first, 2)+B*x_first+C;
        cout << "f(" << x_first << ") = " << f_first;

        cout << "\n\nPlease enter a second value for x: ";
        cin >> x_second;
        f_second = A*pow(x_second, 2) + B*x_second + C;
        cout << "f(" << x_second << ") = " << f_second;

        cout << "\n\nPlease enter a third value for x: ";
        cin >> x_third;
        f_third = A*pow(x_third, 2) + B*x_third+C;
        cout << "f(" << x_third << ") = " << f_third;

double deg_angle, rad_angle, sine, cosine, tangent, cosecant, secant, cotangent;
int dec2;

rad_angle = deg_angle*(3.14159265358979323846264/180.0);

sine = sin(rad_angle);
cosine = cos(rad_angle);
tangent = tan(rad_angle);
cosecant = 1/sin(rad_angle);
secant = 1/cos(rad_angle);
cotangent= 1/tan(rad_angle);

        cout << "\n\nPlease enter an angle measure in degrees: ";
        cin >> deg_angle;cout << "Please enter the desired number of decimal places of accuracy: ";
        cin >> dec2;
        cout << "\nThe corresponding angle in radians is: " << rad_angle;

        cout << "\n\nsin(" << deg_angle << ") = " << sine;
        cout << "\ncos(" << deg_angle << ") = " << cosine;
        cout << "\ntan(" << deg_angle << ") = " << tangent;
        cout << "\ncsc(" << deg_angle << ") = " << cosecant;
        cout << "\nsec(" << deg_angle << ") = " << secant;
        cout << "\ncot(" << deg_angle << ") = " << cotangent;

        cout << "\n\nThank you for using the Function Calculator. Have a nice day!\n\n";

return 0;
}