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

Variable appears in linear form only

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

First and second quadrants

Second and third quadrants

$30^\circ, 150^\circ$

$120^\circ, 240^\circ$

$0 \leq 2x \leq 720$

After finding all solutions for $2x$

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

Third and fourth quadrants