Class 12 Vector Algebra · Conceptual Answer1 Marksdirection_cosines
Class 12 Maths · Vector Algebra · Conceptual Answer #42
Find the direction cosines of (−2,1,−5).
✅ Step-by-Step Solution
Final Answer: (−2/√30,1/√30,−5/√30).
- The vector has norm √(4+1+25) = √30. Normalize its components.
- (−2/√30,1/√30,−5/√30).
📋 CBSE Stepwise Marking Scheme
- [0.5 marks] The vector has norm √(4+1+25) = √30. Normalize its components.
- [0.5 marks] (−2/√30,1/√30,−5/√30).
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