Sine Rule (Leaving Cert Mathematics): Flashcards

Any triangle (not just right-angled)

Two angles and one side ($AAS$ or $ASA$)

Two sides and non-included angle ($SSA$)

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

Lengths of the sides of the triangle

Angles opposite sides $a$, $b$, $c$

Two angles and the length of a side

Two side lengths and angle not included

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