Matematika A - 2014. ljeto, 8.

A. $2(\cos \pi+i \sin \pi)$

B. $4\left(\cos \frac{\pi}{2}+i \sin \frac{\pi}{2}\right)$

C. $6\left(\cos \frac{\pi}{3}+i \sin \frac{\pi}{3}\right)$

D. $8\left(\cos \frac{\pi}{4}+i \sin \frac{\pi}{4}\right)$