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If vector a = a1i + a2j + a3k and vector b = b1i + b2j + b3k then vector(a . b) is

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If vector a = a1i + a2j + a3k and vector b = b1i + b2j + b3k then vector(a . b) is

(A) a1a2 + b1b2 + c1c2

(B) a1b2 + a2b1 + c1c2 

(C) a1b1 + a2b2 + a3b3 

(D) None of these

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1 Answer

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(C) a1b1 + a2b2 + a3b3 

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