\(R_{\theta}=\begin{pmatrix}\cos(\theta)&-\sin(\theta)\\ \sin(\theta)&\cos(\theta)\end{pmatrix}\\~\\ \text{rotates a point counter-clockwise by angle $\theta$}\)
\(R_{\theta}=\begin{pmatrix}\cos(\theta)&-\sin(\theta)\\ \sin(\theta)&\cos(\theta)\end{pmatrix}\\~\\ \text{rotates a point counter-clockwise by angle $\theta$}\)
