Trigonometric Proof (AQA A-Level Mathematics): Quizzes

True for all values in the domain

The more complex side

$\sec^2 \theta$

$\frac{1}{\cos \theta}$

$\frac{\sin \theta}{\cos \theta}$

$2\sin \theta \cos \theta$

Combine into a single fraction

They're fundamental & reveal patterns

LHS = RHS

$1 + \cot^2 \theta$