Trigonometry - Further Identities (Edexcel A-Level Mathematics): Quizzes

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

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

$2\sin \theta \cos \theta$

$1 - 2\sin^2 \theta$

$\frac{2\tan \theta}{1 - \tan^2 \theta}$

$\frac{1}{2}[\sin(A+B) + \sin(A-B)]$

$2\sin(\frac{A+B}{2})\cos(\frac{A-B}{2})$

$\cos \theta$

$\cos \theta$

$\frac{7}{25}$