CBSE Class 12 Mathematics 2026 Main Paper 65/5/1 · Q171 Marksdot_products
CBSE Class 12 Mathematics 2026 Main Paper 65/5/1 · Question 17 (Vector Algebra)
Perpendicular strips have direction vectors (3,2,λ) and (2,−4,5). Find λ.
✅ Step-by-Step Solution
Final Answer: 2/5
- The dot product 6−8+5λ vanishes, giving λ=2/5.
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