Class 12 Three Dimensional Geometry · Conceptual Answer1 Marksdirection_cosines
Class 12 Maths · Three Dimensional Geometry · Conceptual Answer #68
Find direction cosines for direction ratios (−18,12,−4).
✅ Step-by-Step Solution
Final Answer: ±(−9,6,−2)/11.
- The norm is √484=22; divide the components by 22.
- ±(−9,6,−2)/11.
📋 CBSE Stepwise Marking Scheme
- [0.5 marks] The norm is √484=22; divide the components by 22.
- [0.5 marks] ±(−9,6,−2)/11.
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