Lesson: De Moivre’s Theorem for Trigonometric Identities Mathematics

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

Lesson Plan

Objectives

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.

Prerequisites

Students should already be familiar with

  • the binomial theorem,
  • trigonometric and exponential forms of complex numbers,
  • de Moivre’s theorem.

Lesson Video

Video Thumbnail
14:06

Lesson Explainer

Sample Question Videos

  • 04:12
  • 05:57
  • 06:37

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