Question
If A2 + B2 + C2 = 0, then what is the value of the following?\(\Delta = \begin{vmatrix} 1 & \cos C & \cos B \\\ \cos C & 1 & \cos A \\\ \cos B & \cos A & 1 \end{vmatrix}\)
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NDA 2 2025 GAT Question Paper (14-Sep-2025)
The correct answer is
1
From the matrix equation, the given values simplify to cosA = cosB = cosC = 1, which leads to value = 1.
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