Find the roots of the cubic equation z3=8iz^3 = 8iz3=8i in polar form.
2eiπ/62e^{i\pi/6}2eiπ/6
2ei5π/62e^{i5\pi/6}2ei5π/6
2ei3π/22e^{i3\pi/2}2ei3π/2
2eiπ/22e^{i\pi/2}2eiπ/2