MHT CET 2026 Mathematics question

If and are unit vectors perpendicular to each other, Then

(A)-1
(B)1Correct
(C)2
(D)3

Answer: (B)

Solution

Let . The scalar triple product is unchanged if a multiple of one vector is added to another. Since the third vector is , subtract it from the first two: \bar\bar\bar\bar\bar\bar\bar\bar\bar\bar\bar\bar\bar\bar$

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Question ID VK-101676