Given z1 = 5 cos +i sin and z2 = 2 cos +i sin , find zz2 where ISa

Given = 5 cos+i sin and z2 3m , find where ose < 2K . cos -I-i sin 2 o o o B. C. D. ZIZ2 ZIZ2 2 315 = 10 cos+isin 2 = 2.5(cosT+i sin n) = IO(cos T+i sin T) = 10(cos 3T+i sin 3m)