show that the magnitude of the resulting of two vectors A and B lies in between A+B and A-B or B-A
Answers
Answered by
1
Explanation:
Take two vectors a and b and complete the parallelogram. Let its area be Δ1 . Now Draw vectors a+b and a-b and using them as adjacent sides complete their parallelogram. Let its area be Δ2.
It is not difficult to see/prove Δ2=2Δ1 .
Hence (a-b) X (a+b)= 2(a X b) (Why?)
Result will remain same if a and b are collinear vectors.
mark me dr❤️
Similar questions