User:Vossman/Affine

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\begin{bmatrix} s&0 \\ 0&s \\ \end{bmatrix} \begin{bmatrix} 1&0 \\ 0&\cos{\theta} \\ \end{bmatrix} \begin{bmatrix} \cos{\phi}&\sin{\phi} \\ \sin{\phi}&\cos{\phi} \\ \end{bmatrix} = \begin{bmatrix} s\cos{\phi}&s\sin{\phi} \\ s\cos{\theta}\sin{\phi}&s\cos{\theta}\cos{\phi} \\ \end{bmatrix}