Compound Angle Formulae (Leaving Cert Mathematics): Quizzes

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

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

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

The minus becomes a plus

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

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

$\sin 30°$

By dividing sine formula by cosine formula

No, they do not apply

$\cos \theta$

Finding derivatives of functions

$\sin^2 \theta + \cos^2 \theta = 1$