If ABC is a triangle, then what is the value of the determinant vmatrix C& B&0 A&0& B 0& (B+C)& C vmatrix ?

NDA 2024 Mathematics question

If is a triangle, then what is the value of the determinant ?

Answer: (B)

Expanding along the first row: $ C [0- B(B+C)]- B [ A C-0] = - B

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Question ID VK-029791