MCQ
$\left|\begin{array}{ll}\cos 15^{\circ} & \sin 15^{\circ} \\ \sin 15^{\circ} & \cos 15^{\circ}\end{array}\right|=$
- A1
- B$\frac{1}{2}$
- ✓$\frac{\sqrt{3}}{2}$
- Dइनमें से कोई नहीं
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