Lesson: De Moivre’s Theorem for Trigonometric Identities Mathematics • Third Year of Secondary School

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In this lesson, we will learn how to use de Moivre’s theorem to obtain trigonometric identities.

Students will be able to

use de Moivre’s theorem to find multiple-angle formulae,
use de Moivre’s theorem to find expressions for the powers of trigonometric identities,
use de Moivre’s theorem to find trigonometric identities that are used to evaluate trigonometric integrals and solve trigonometric equations.