Question:
By using de Moivre's Theorem, prove that cos5θ = 16 cos⁵θ
Last updated: 8/6/2022
By using de Moivre's Theorem, prove that cos5θ = 16 cos⁵θ - 20cos³θ + 5 cosθ Hence find all the roots of the equation 48x⁵ - 60x³ + 15x + 2 = 0.
Last updated: 8/6/2022
By using de Moivre's Theorem, prove that cos5θ = 16 cos⁵θ - 20cos³θ + 5 cosθ Hence find all the roots of the equation 48x⁵ - 60x³ + 15x + 2 = 0.