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CBSE Class 12 Mathematics 2026 Supplementary Paper 65(B)/7 · Q201 Marksdirection_cosines

CBSE Class 12 Mathematics 2026 Supplementary Paper 65(B)/7 · Question 20 (Three Dimensional Geometry)

Assertion: Angles 45°,90°,45° to the positive axes give direction cosines (1/√2,0,1/√2). Reason: Direction cosines are the cosines of the three angles to the positive axes.

✅ Step-by-Step Solution

Final Answer: Both true, and the reason explains the assertion.
  1. The reason gives the three values directly by taking cosines.

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All Questions in CBSE Class 12 Mathematics 2026 Supplementary Paper 65(B)/7

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