Applications of de Moivre's Theorem (Edexcel A-Level Further Mathematics): Quizzes

$\cos(n \theta) + i \sin(n \theta)$

$\cos^2 \theta - \sin^2 \theta$

$2 \cos \theta \sin \theta$

$0, \frac{2\pi}{3}, \frac{4\pi}{3}$

$2, 2i, -2, -2i$

$\cos^3 \theta - 3 \cos \theta \sin^2 \theta$

$3 \cos^2 \theta \sin \theta - \sin^3 \theta$

$e^{i\theta} = \cos \theta + i \sin \theta$

Geometric series

Finding derivatives of trig functions