Trigonometry (Grade 11 NSC Matric Mathematics): Flashcards

Equations containing trig functions like sin, cos, or tan

Positive acute angle between $0°$ and $90°$

Quadrants I and II

Quadrants I and IV

Quadrants I and III

$360°$

$180°$

$\theta = 180° - \text{reference angle}$

$\theta = 180° + \text{reference angle}$

Factoring and substitution