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If A=
\left[
\begin{array}{11}
Cos\alpha & - Sin\alpha \\
Sin\alpha & Cos \alpha \\
\end {array}
\right ]
\left[
\begin{array}{11}
Cos\alpha & - Sin\alpha \\
Sin\alpha & Cos \alpha \\
\end {array}
\right ]
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| Question Text | If A= \left[ \begin{array}{11} Cos\alpha & - Sin\alpha \\ Sin\alpha & Cos \alpha \\ \end {array} \right ] |
