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Question Number 33158 by Rio Mike last updated on 11/Apr/18

$$thematricewhichcomesfrom$$$$thetransformationmatrix$$$$\left(\begin{array}{c}cos\theta -sin\theta \\ sin\theta cos\theta \end{array}\right)$$$$at90°is?$$

Commented by Joel578 last updated on 11/Apr/18

$$\mathrm{You}\mathrm{just}\mathrm{substitute}\theta =90°\mathrm{into}\mathrm{the}\mathrm{matrice}$$

Commented by prof Abdo imad last updated on 15/Apr/18

$$thisisamatriceofrotationatev.V_{2}andfor$$$$\theta =\frac{\pi }{2}thematricebecome\left(\begin{array}{c}0-1\\ 10\end{array}\right)$$

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