Sine Rule, Cosine Rule and Triangle Area

What this note covers

1. Foundations: Labelling Non-Right-Angled Triangles
2. The Sine Rule
3. The Ambiguous Case (SSA)
4. The Cosine Rule
5. Triangle Area: A = ½ab sin C
6. Selecting the Right Rule: A Decision Framework
7. Navigational and Geometric Applications in Australian Contexts

7 sections · 12 key terms & formulas · 6 common mistakes