જો $F(\alpha ) = \left[ {\begin{array}{*{20}{c}}{\cos \alpha }&{ - \sin \alpha }&0\\{\sin \alpha }&{\cos \alpha }&0\\0&0&1\end{array}} \right]$, કે જ્યાં $\alpha \in R.$ તો ${[F(\alpha )]^{ - 1}}$ = . . .
Medium
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