This key facts covers The Formula within Area of Triangle (Trig) for GCSE Mathematics. Revise Area of Triangle (Trig) in Geometry & Measures for GCSE Mathematics with 12 exam-style questions and 2 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 2 of 3 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 2 of 3
Practice
12 questions
Recall
2 flashcards
The Formula
| Area | = (1/2) × a × b × sin C |
| Where | C is the INCLUDED angle (between sides a and b) |
| Also written as | (1/2)ab sinC or (1/2)bc sinA or (1/2)ac sinB |