# The Sine Rule

> This section finds a missing side or a missing angle in any triangle with the sine rule: a/sin A=b/sin B=c/sin C. Pair each side with the angle opposite it. Use the triangles and lengths this…

- Page: https://www.hlayiso.com/grade-12/mathematics/notes/trigonometry-sine-cosine-and-area-rules/the-sine-rule

Breadcrumbs: [Home](https://www.hlayiso.com/) › [Grade 12](https://www.hlayiso.com/grade-12) › [Mathematics](https://www.hlayiso.com/grade-12/mathematics) › [Notes](https://www.hlayiso.com/grade-12/mathematics/notes) › [Trigonometry: Sine, Cosine and Area Rules](https://www.hlayiso.com/grade-12/mathematics/notes/trigonometry-sine-cosine-and-area-rules) › [The Sine Rule](https://www.hlayiso.com/grade-12/mathematics/notes/trigonometry-sine-cosine-and-area-rules/the-sine-rule)

## Full notes

This is a preview of the The Sine Rule notes for Grade 12 Mathematics. Create a free Hlayiso account to read the full notes, practise every question and track your progress.

## More in Trigonometry: Sine, Cosine and Area Rules

- [The Area Rule](https://www.hlayiso.com/grade-12/mathematics/notes/trigonometry-sine-cosine-and-area-rules/the-area-rule) — Previous section
- [The Cosine Rule](https://www.hlayiso.com/grade-12/mathematics/notes/trigonometry-sine-cosine-and-area-rules/the-cosine-rule) — Next section
- [All Trigonometry: Sine, Cosine and Area Rules sections](https://www.hlayiso.com/grade-12/mathematics/notes/trigonometry-sine-cosine-and-area-rules)

## Frequently asked questions

### What will I learn in "The Sine Rule"?

This section covers The Sine Rule as part of Trigonometry: Sine, Cosine and Area Rules in Grade 12 Mathematics. You'll find clear explanations, worked examples, and key definitions aligned to the CAPS curriculum.

### Is this section aligned with the CAPS curriculum?

Yes. All notes on Hlayiso, including "The Sine Rule", are written against the official CAPS curriculum and ATP for Grade 12 Mathematics.

### What should I study after "The Sine Rule"?

Continue with the next section in Trigonometry: Sine, Cosine and Area Rules, or test your understanding with the interactive quiz linked to this section.

---

Hlayiso: free CAPS and IEB past papers, memos, notes and study guides for South African learners. When citing, link the page URL above, not a PDF or /api/ URL.
