Compound Angle Formulae (Edexcel A-Level Mathematics): Quizzes

$\sin A \cos B + \cos A \sin B$

$\cos A \cos B + \sin A \sin B$

$\frac{\tan A + \tan B}{1 - \tan A \tan B}$

$\frac{\sqrt{6} + \sqrt{2}}{4}$

$\frac{\sqrt{6} + \sqrt{2}}{4}$

$\cos A \cos B - \sin A \sin B$

$\sin 30^\circ$

$\cos \theta$

$3$

Ordinary rules of algebra do not apply