Program

#include <iostream>//Header file
#include <bits/stdc++.h>
using namespace std;
float degree, radians, a2;
const float PI = 3.142;
float AreaOfTriangle(int a, int b, int c);// Function prototype with a return value of float
float CalculateTheDistance(int a, int b, int c);// Function prototype with a return value of float

int main()
{
    int sideA, sideB, sideC; //Variable declaration

    cout<<"This program will compute the distance of the community electricity source."<<endl;
    cout<<"Enter the Length of side A: ";
    cin>>sideA;
    cout<<"Enter the Length of side B: ";
    cin>>sideB;
    cout<<"Enter the value of angle between them in degree: ";
    cin>>sideC;

    float distance = CalculateTheDistance(sideA,sideB,sideC);
    float area = AreaOfTriangle(sideA,sideB,sideC);

    cout<<"The total value of the distance between the house A and hourse B is: " << fixed << setprecision(2) << distance <<endl;
    cout<<"The total area is: "<< fixed << setprecision(2) << area <<endl <<endl;
    return 0;
}

float CalculateTheDistance(int a, int b, int c){
    //Compute the distance
    radians = (degree*PI/180); //get the value of the radian of the degree in the consines
    a2 = pow(b,2) + pow(c,2) - (2*b*c*cos(radians));
    a2= sqrt(a2);

    return a2;//Return the value
}

float AreaOfTriangle(int a, int b, int c){
    float area = (float)((1 / 2.0) * a * b * (sin(c)));

    return area;
}