Find the fourth term in the fifth roots of unity (solutions to z⁵ − 1 = 0).
University of Ilorin MTH101 2026-exam past question
- cos(6π/5) + i sin(6π/5)
- cos(4π/5) + i sin(4π/5)
- cos(8π/5) + i sin(8π/5)
- cos(2π/5) + i sin(2π/5)
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