Determinants
Xam Idea
CBSE
Grade 12
Question:
Evaluate the determinant $\Delta = \begin{vmatrix} 1 & \sin\theta & 1 \\ -\sin\theta & 1 & \sin\theta \\ -1 & -\sin\theta & 1 \end{vmatrix}$.
Step-by-Step Solution
Key Concept: 2(1 + sin^2\theta).
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Correct Answer:
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