MCQ
જો $A(x)=\left[\begin{array}{cc}\cos x & -\sin x \\ \sin x & \cos x\end{array}\right]$ તો $A\left(\frac{\pi}{2}\right) A(\pi)=\ldots \ldots \ldots$
- A$A(0)$
- B$A \left(-\frac{\pi}{2}\right)$
- ✓$A\left(-\frac{3 \pi}{2}\right)$
- D$A (-\pi)$
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