Find the three cubic roots of -1
possible answers
a> cos π/3 + i sin π/3, cos 3π + i sin 3π , cos 2π/3 + i sin 2π/3
b> cos π/3 + i sin π/3, cos π + i sin π, cos 5π/3 + i sin 5π/3
c> cos π/2 + i sin π/2, cos π + i sin π, cos 5π/2 + i sin 5π/2
d> cos π/4 + i sin π/4, cos π + i sin π, cos 5π/4 + i sin 5π/4
Any help would be greatly appreciated
please show step by step!