If $\mathrm{F}\left(\mathrm{x}\right)=\left[\begin{array}{ccc}\cos \mathrm{x}& -\sin \mathrm{x}& 0\\ \sin \mathrm{x}& \cos \mathrm{x}& 0\\ 0& 0& 1\end{array}\right]$ and $\mathrm{G}\left(\mathrm{x}\right)=\left[\begin{array}{ccc}\cos \mathrm{x}& 0& \sin \mathrm{x}\\ 0& 1& 0\\ -\sin \mathrm{x}& 0& \cos \mathrm{x}\end{array}\right]$ then [F(x).G(x)]^-1

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