Linear Trigonometric Equations (AQA A-Level Mathematics): Quizzes

$180^\circ$ or $\pi$ radians

First and second quadrants

Second and third quadrants

Third and fourth quadrants

$45^\circ, 225^\circ$

$\theta = \tan^{-1}(k) + 180^\circ n$

$0 \leq 2x \leq 720$

$-540 \leq 3x \leq 540$

Due to the periodic nature of trig functions

Isolate the trigonometric function