area of a triangle
What area of a triangle means in Mathematics A-Level, as defined for Pearson Edexcel, WJEC.
Definitions of area of a triangle
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Reference: WJEC
Given by Area = ½ab sin C, which requires two sides and the sine of their included angle.
Given by the formula ½ab sin C, using the included angle between the two chosen sides.
Topics that use area of a triangle
- Trigonometry (Pearson Edexcel A-Level)
- Trigonometry (AS Unit 1: Pure Mathematics A) (WJEC A-Level)
Related terms
- principal value
- unit circle
- Arcsin, arccos and arctan
- Asymptotes
- CAST diagram
- cosine rule
- Domain
- Domains of reciprocal functions
Using area of a triangle in the exam
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