Key Stage 4 (GCSE) · Years 10-11 · Geometry and measures · Mensuration and calculation
G22know and apply the sine rule, a/sin A = b/sin B = c/sin C, and cosine rule, a² = b² + c² − 2bc cos A, to find unknown lengths and angles
GCSE subject content
GCSE specifications in mathematics should require students to know and apply the sine rule, a/sin A = b/sin B = c/sin C, and cosine rule, a² = b² + c² − 2bc cos A, to find unknown lengths and angles
Tier: This item is set in bold type: Higher tier only.
Source: Department for Education, GCSE mathematics: subject content and assessment objectives. Crown copyright information reproduced under the Open Government Licence v3.0.
uk-gcse-ma-g-22. The DfE numbers this item 22 within Geometry and measures; the G22 form follows the awarding bodies' convention.Worksheet gap
ChalkBee does not yet have a suitably matched worksheet for this requirement. This is Higher-tier-only content; ChalkBee's GCSE resources are Foundation-first for now.
Teaching-unit gap
A dedicated, teach-from-this ChalkBee unit is still needed for this requirement.