Mathematics GCSE
sine rule
What sine rule means in Mathematics GCSE, as defined for Pearson Edexcel.
Definition of sine rule
Check what you remember
Read the wording for your board, then hide it and explain sine rule in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
Use a/sin A = b/sin B = c/sin C when you know a side together with the angle opposite it, plus one more side or angle.
Topics that use sine rule
- Geometry and measures - Mensuration and calculation (Pearson Edexcel GCSE)
Related terms
- Arc
- arc length
- area and volume units
- area of a segment
- Chord
- Circumference
- Composite shapes and solids
- Congruence
Using sine rule in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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