Class 12 Vector Algebra · Conceptual Answer1 Marksdirection_cosines
Class 12 Maths · Vector Algebra · Conceptual Answer #37
Find the cosine of the angle that (√2,1,1) makes with the positive y-axis.
✅ Step-by-Step Solution
Final Answer: 1/2.
- The norm is √(2+1+1) = 2; the y direction cosine is its y-component divided by its norm.
- 1/2.
📋 CBSE Stepwise Marking Scheme
- [0.5 marks] The norm is √(2+1+1) = 2; the y direction cosine is its y-component divided by its norm.
- [0.5 marks] 1/2.
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