AQA GCSE Mathematics · 8300
Specification G20 · Paper 1, Paper 2, Paper 3
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GCSE Mathematics · key term
The side next to the acute angle being considered in a right-angled triangle, excluding the hypotenuse.
Used by AQA, Edexcel and OCR
Specification G20 · Paper 1, Paper 2, Paper 3
Specification G20, G21 · Paper 1, Paper 2, Paper 3
The non-hypotenuse side next to the chosen angle in a right-angled triangle.
Revise: Right-Angled TrigonometryThe hypotenuse stays the same whichever acute angle is selected, but the opposite and adjacent sides exchange roles when the selected angle changes. This is why sides must be labelled for the particular angle in the question rather than from the triangle's orientation on the page.
The side next to the angle being considered that is not the hypotenuse.
Specification 10.05b · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
The side of a right-angled triangle next to the chosen acute angle, excluding the hypotenuse.
Label the sides relative to the angle being used before choosing a ratio. The adjacent side is not the hypotenuse.
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