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Given z1 = 2(cos 60° + i sin 60°) and z2 = 8(cos 150° + i sin 150°), what is z1z2?

3(cos 210° + i sin 210°)
3(cos 90° + i sin 90°)
16(cos 210° + i sin 210°)
16(cos 90° + i sin 90°)