Q.19. The necessary condition for two vectors A ⃗ and B ⃗ to be perpendicular, is *
A ⃗×B ⃗ =1
A ⃗×B ⃗=0
A ⃗.B ⃗=0
A ⃗.B ⃗=1
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Answer:
option 1 is the answer
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1
Answer:
a is corect answer
Explanation:
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