The Sine Rule (HSC SSCE Mathematics Standard): Flashcards

Non-right-angled triangles

Each side named by lowercase letter of opposite angle

$\frac{a}{\sin A} = \frac{b}{\sin B} = \frac{c}{\sin C}$

$\frac{\sin A}{a} = \frac{\sin B}{b} = \frac{\sin C}{c}$

2 sides + opposite angle OR 2 angles + 1 side

Sides and angles are opposite each other

Side divided by sine of angle (fractions)

Sine of angle divided by side (reciprocals)

Degree mode

Use inverse sine