Here's your chance to have a go at some of the toughest A-level maths questions in papers from the past six years from exam boards AQA, Edexcel and OCR.

Trigonometry - Eduqas Calculating a length The three trigonometric ratios; sine, cosine and tangent are used to calculate angles and lengths in right-angled triangles.

The class Trigonometry: Sine, Cosine, and Tangent discusses the three basic ratios that are the basis for trigonometry. Trigonometry is based on the specific relationships between the sides and angles ...

Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles. Trigonometry is found all throughout geometry, as every straight-sided shape may be ...