--- excalidraw-plugin: parsed tags: [excalidraw] --- ==⚠ Switch to EXCALIDRAW VIEW in the MORE OPTIONS menu of this document. ⚠== # Text Elements e ^i0aQMqP4 1 ^HGGIdYdn e ^xFSNzZfe 2 ^rXnI70LR vecteurs verts : rotation d'angle theta ^ZIK9eMYM sin ^ac2QIp4V cos ^Geo1ilXi -sin ^9a6h8pKg cos ^kMXx02Q0 # Embedded files 39f23bfc61b3770886c6aafc962a252806f589ab: $$r_\theta(e_1) = \begin{pmatrix} \cos \theta\\ \sin\theta \end{pmatrix}$$ 04dce9015e346c50f6d5187637734664de5e4aeb: $$r_\theta(e_2) = \begin{pmatrix} -\sin \theta\\ \cos\theta \end{pmatrix}$$ 304851cecddcd1fb7edb8f187e999c2c88676f0e: $$r_\theta \widehat{=} \begin{pmatrix} \cos\theta & -\sin \theta\\ \sin\theta & \cos\theta \end{pmatrix}$$ %% # Drawing ```json { "type": "excalidraw", "version": 2, "source": "https://excalidraw.com", "elements": [ { "type": "ellipse", "version": 34, "versionNonce": 13394162, "isDeleted": false, "id": "iYnAwiGSmRkjBWvpETyyy", "fillStyle": "hachure", "strokeWidth": 1, "strokeStyle": "solid", 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