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CBSE Class 12 Mathematics 2026 Main Paper 65/3/3 · Q31 Marksperpendicular_lines

CBSE Class 12 Mathematics 2026 Main Paper 65/3/3 · Question 3 (Three Dimensional Geometry)

Which listed direction ratios are perpendicular to both (1,0,0) and (0,−1,0)?

(A) (1,1,0)
(B) (0,0,−1)
(C) (1,1,1)
(D) (1,0,−1)

✅ Step-by-Step Solution

Final Answer: (0,0,−1)

A perpendicular direction has zero first and second components. The listed nonzero choice is (0,0,−1).

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