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1.

BUP FST 20-21

ক

$\left(\begin{array}{cc}\cos \theta & -\sin \theta \\ \sin \theta & \cos \theta\end{array}\right)$

খ

$\left(\begin{array}{cc}\sin \theta & \cos \theta \\ \sin \theta & \cos \theta\end{array}\right)$

গ

$\left(\begin{array}{cc}\sin \theta & \cos \theta \\ -\sin \theta & \cos \theta\end{array}\right)$

ঘ

$\left(\begin{array}{cc}\sin \theta & \cos \theta \\ -\sin \theta & \sin \theta\end{array}\right)$

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