M-GEO-051Higher onlyReview: Pending

Use the sine rule

Geometry and measures · Trigonometry (T-GEO-021)

v1 mapping, pending teacher review. Only AQA and Edexcel are mapped so far. The first 3 pilot worksheets and their worked answers are available; remaining worksheets are coming soon. All videos are still coming soon.

Retrieval: Opposite angle-side pairs
Fluency: Find sides and angles including supplementary possibilities
Reasoning: Explain the ratio or rule using the known information.
Application: Solve a non-right-angled route problem
Common misconception: Opposite and adjacent depend on the chosen reference angle.

Video brief

Model how to use the sine rule. Explain each step; pause for a matching shadow question.

Planned video: V-GEO-051 · Video coming soon

Worksheets

M-GEO-051-WS01 · Pilot worksheet

Student worksheet (PDF)Worked answers

All three worksheets: worked solutions (PDF)

Note: Include ambiguous supplementary-angle cases only where the question supplies sufficient information.