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.

Video

14:06

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Q1:

Using de Moivre’s theorem, find the exact value of

Q2:

Which of the following is equivalent to ?

Q3:

Use de Moivre’s theorem to find the exact value of .

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