2/09/2017

Geeksforgeeks Solution For " Parallel or Perpendicular? "

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Problem :- Given two force vectors, find out whether they are parallel, perpendicular or neither. Let the first vector be A = a1 i +a2 j + a3 k and the second vector be B = b1 i + b2 j + b3 k.

A.B = a1*b1 + a2*b2 + a3*b3

A x B = (a2*b3 - a3*b2) i - (a1*b3 - b1*a3) j + (a1*b2 - a2*b1) k

|A|^2 = a1^2 + a2^2 + a3^2

If A.B = 0, then A and B are perpendicular.

If |A X B|^2 = 0, then A and B are parallel.

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Solution :-

#include <iostream>
using namespace std;
int main()
{
    int t;
    cin>>t;
    while(t--)
    {
       int a1=0,a2=0,a3=0,b1=0,b2=0,b3=0,par,per;
       cin>>a1>>a2>>a3>>b1>>b2>>b3;
       par=(a2*b3-a3*b2)-(a1*b3-b1*a3)+(a1*b2-a2*b1);
       per= a1*b1 + a2*b2 + a3*b3;
       if(par==0)
       cout<<"1\n";
       else if(per==0)
       cout<<"2\n";
       else
       cout<<"0\n";
    }
    return 0;

}


Output:-

Geeksforgeeks Solution For " Parallel or Perpendicular? "

Ghanendra Yadav

Ghanendra Yadav

Hello, I Am Ghanendra Yadav Owner of This Blog, I am professional Blogger and Programmer. I Love Programming, Logo Making, And Banner Designing. My Highest Qualification is MCA From NIT Warangal. You Can Find Me On Social Media Through Below Link And If You Have Any Query Related To Programming And Other Subject Comment Below or You Can Mail Me I Will Try To Answer Within 24 Hours Email:- yghanendra@student.nitw.ac.in

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