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CBSE Class 12 Mathematics 2026 Main Paper 65/5/2 · Q81 Markstriangle_area

CBSE Class 12 Mathematics 2026 Main Paper 65/5/2 · Question 8 (Determinants)

A=(3,1), B=(−2,1), C=(0,k) form a triangle of area 5. Find the possible k values.

✅ Step-by-Step Solution

Final Answer: −1 and 3
  1. The base has length 5 and the height is |k−1|. Thus |k−1|=2.

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