Solving Equations (Grade 12 NSC Matric Mathematics): Quizzes

$360°$

$180°$

$θ = \tan^{-1} x + k × 180°$

First quadrant ($0°$ to $90°$)

Second quadrant ($90°$ to $180°$)

Fourth quadrant ($270°$ to $360°$)

$k$ is any integer

$θ = \sin^{-1} x + k × 360°$

It could equal zero & you'd lose solutions

Simplify using algebra & trig identities