Let a , b and c be unit vectors such that a b = a c =0. If the angle between b and c is /6, then what is a equal to?

NDA 2026 Mathematics question

Let , and be unit vectors such that . If the angle between and is , then what is equal to?

Answer: (C)

is perpendicular to both and , so for some scalar . Now \vec\vec\vec\vec$

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Question ID VK-030441