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Transformationshard
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Consider the transformation f(x,y)=(xcos⁡θ−ysin⁡θ,xsin⁡θ+ycos⁡θ)f(x, y) = (x \cos \theta - y \sin \theta, x \sin \theta + y \cos \theta)f(x,y)=(xcosθ−ysinθ,xsinθ+ycosθ). If we represent this as a matrix RRR, which of the following expressions is equal to RnR^nRn?