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The vector a1i + a2j + a3k and b1i + b2j + b3k are perpendicular to each other if

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+1 vote
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in Mathematics by (52.5k points)

The vector a1i + a2j + a3k and b1i + b2j + b3k are perpendicular to each other if—

(a) a1/b1 = a2/b2 = a3/b3

(b) a1b1 + a2b2 + a3b3 = 0

(c) a1b2 + b2a1 + a3b2 = 0

(d) None of these

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1 Answer

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by (80.9k points)

(b) a1b1 + a2b2 + a3b3 = 0

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