Class 12 Determinants · Conceptual Answer1 Marksdeterminant_evaluation
Class 12 Maths · Determinants · Conceptual Answer #37
Evaluate \(\begin{vmatrix}\cos15^\circ & \sin15^\circ\\\sin75^\circ & \cos75^\circ\end{vmatrix}\).
✅ Step-by-Step Solution
Final Answer: 0
- Expand as cos15°cos75°−sin15°sin75°=cos(15°+75°)=cos90°=0.
- 0
📋 CBSE Stepwise Marking Scheme
- [0.5 marks] Expand as cos15°cos75°−sin15°sin75°=cos(15°+75°)=cos90°=0.
- [0.5 marks] 0
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