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ICSE Class X Math 2019 Paper

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Question : 7 of 32
Marks: +1, -0
Simplify
sin⁡A[sin⁡A−cos⁡Acos⁡Asin⁡A]\sin A \begin{bmatrix} \sin A & -\cos A \\ \cos A & \sin A \end{bmatrix} +cos⁡A[cos⁡Asin⁡A−sin⁡Acos⁡A]+ \cos A \begin{bmatrix} \cos A & \sin A \\ -\sin A & \cos A \end{bmatrix}
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