AQA GCSE Mathematics · 8300
Specification G23 · Paper 1, Paper 2, Paper 3
- Revise: Triangle Area
The operation used to find an angle from its sine value, written .
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GCSE Mathematics · key term
The calculator operation that finds an angle from its sine value.
Used by AQA, Edexcel and OCR
Specification G23 · Paper 1, Paper 2, Paper 3
The operation used to find an angle from its sine value, written .
Specification G23 · Paper 1, Paper 2, Paper 3
Revise: Area of a TriangleApply it directly to find area, rearrange it to find one of those sides, or use inverse sine to recover the included angle. If no area is involved, the sine rule or cosine rule may be more direct.
Specification 10.05d · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
The calculator operation sin⁻¹ that finds an angle from its sine value.
Revise: Sine RuleInverse sine can sometimes give one of two possible angles, because an acute angle and its supplement have the same sine. If both angles fit the triangle’s other information, there are two possible triangles; check rather than assuming the calculator’s first answer is the only one.
Put your calculator in degree mode before using sine or inverse sine.
Put your calculator in degree mode before evaluating sine or inverse sine.
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