Program to enter two sides of triangle and angle between them as theta and calculate Area and third side of triangle tutorials

C++Program to Enter two sides of Triangle a,b and angle between them as theta.

Calculate Area and third side of triange using following formulas.

c =

         ab sin(theta)

area =----------------

              2

/*

WAP to Enter two sides of Triangle a,b and angle between them as theta.

Calculate Area and third side of triange using following formulas.

c =

          ab sin(theta)

area =----------------

                2

*/

#include <iostream.h>

#include <conio.h>

#include <math.h>

void main()

{

float a, b, c, theta, area;

clrscr();

cout << "Enter two sides of a triangle : ";

cin >> a >> b;

cout << "Enter angle between a and b in radians : ";

cin >> theta;

c = sqrt(a*a + b*b -2*a*b*cos(theta));

area = a*b*sin(theta)/2;

cout << "Third side of triangle = " << c;

cout << "\nArea of triangle = " << area;

getch();

}

Output

Enter two sides of a triangle : 3 4

Enter angle between a and b in radians : 1.5712

Third side of triangle =5

Area of triangle =6