Question

8.
The sum of two vectors Ā and B is at right angles to their difference. Then
a) A = B
b) A = 2B
c) B = 2A
d) Ā||B​

Answer 1

Answer:

Text Solution

A=B

A=2B

B=2A

A and B have the same direction

Answer :

A

Solution :

(A+B)⊥(A−B)

∴(A+B).(A−B)=0

∴A2+BAcosθ−ABcosθ−B2=0

or A=B .

Explanation:

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