The polar form ot the complex number $\left(\frac{2+i}{3-i}\right)^{2}$ is :

The polar form ot the complex number $\left(\frac{2+i}{3-i}\right)^{2}$ is :
1). $\frac{1}{2}\left(cos \frac{\pi}{4}-i sin\frac{\pi}{4}\right)$
2). $\frac{1}{2}\left(cos \frac{\pi}{2}-i sin\frac{\pi}{2}\right)$
3). $\frac{1}{2}\left(cos \frac{\pi}{4}+i sin\frac{\pi}{4}\right)$
4). $\frac{1}{2}\left(cos \frac{\pi}{2}+i sin\frac{\pi}{2}\right)$

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