Question

please look at attachment!!!

Answer 1

\[(3\cos(\frac{2\pi}{3}), 3\sin(\frac{2\pi}{3}))\]

Answer 2

\[\left\{3 \cos \left(\frac{2 \pi
}{3}\right),3 \sin \left(\frac{2 \pi
}{3}\right)\right\}=\left\{-\frac{3}{2
},\frac{3 \sqrt{3}}{2}\right\}

\]