Experts could u please answer the 20 th question after 'OR'
Kindly refer the similar link for your query.
https://www.meritnation.com/ask-answer/question/show-that-the-area-of-the-parallelogram-having-diagonals-3i/vector-algebra/3192183
Regards
https://www.meritnation.com/ask-answer/question/show-that-the-area-of-the-parallelogram-having-diagonals-3i/vector-algebra/3192183
Regards