Prove \vec A•((\vec B+\vec C) ×(\vec A+\vec B+\vec C)) = [\vec A\;\vec B\; \vec C]
I am getting zero
I too think that because same question is in MCQ
Show the steps
Thanks for verify
Plz explain last step to zero
((B+C) X A) will be perpendicular to A as it is cross product. And this vector(perpendicular to A) is in dot product with A. So dot product of perpendicular vectors is zero.
Thanks bro got it now
Can you try my question?
Sorry bro but I started vector recently so not able to solve that.
For me at this moment it is tough.
It is b? @Satyendra_Srivastva
It is multiple choice question bro ya
One answer is b @Namish_Garg2
This can be used as formula for your question
What are other answers
Yeah will try this
Other answers are a and c @Namish_Garg2
As the question is in box form we can rearrange and two more forms and then procced like i did for one form
OK By the way did you use this for your question
I didnt get the answer by using this formula @Satyendra_Srivastva
Is it (p+q+r)/2 ?