MHT CET 2025 Mathematics question

MathematicsVector AlgebraMHT CET 2025

If , are the sides of the triangle ABC, where x, y, z are not all zero, such that , the value of is

Answer: (A)

Solution

gives three homogeneous equations: (i), (j), (k). For a non-trivial solution the determinant must vanish:

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Question ID VK-103188