E6.5 Non-right-angled triangles
- Syllabus
- 0580–2028–2029
- Topic
- E6.5
- Level
- Extended
E6.5.1 Use the sine and cosine rules in calculations involving lengths and
- Use the sine and cosine rules in calculations involving lengths and angles for any triangle.
E6.5.2 Use the formula area of triangle = 2 1 ab sin C
- Use the formula area of triangle = 2 1 ab sin C. Includes problems involving obtuse angles and the ambiguous case. The sine and cosine rules and the formula for area of a triangle are given in the List of formulas.
Objective notes
2 learning objectivesConceptIGCSE Mathematics Extended