Class 12 Vector Algebra · Mcq Single Correct1 Marksvector_identities
Class 12 Maths · Vector Algebra · Mcq Single Correct #1
Find |a × b|² + (a · b)².
✅ Step-by-Step Solution
Final Answer: Option (C): |a|²|b|²
- By Lagrange’s identity, |a × b|² = |a|²|b|² − (a · b)².
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