Question

Q.19. The necessary condition for two vectors A and B 'to be perpendicular, is
A xBº=1
A**B=0
A.B "=0
A B =1​

Answer 1

Answer:

The necessary condition for two vectors A and B 'to be perpendicular, is A.B"=0.

Explanation:

Answer 2

Answer:

c option is absolutely correct

Explanation:

because it is only condition for two vectors to be perpendicular

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