Learn and revise trigonometric ratios of sine, cosine and tangent and calculate angles and lengths in right-angled triangles with GCSE Bitesize AQA Maths.

GCSE; Edexcel; Trigonometry - Edexcel Trigonometric graphs - Higher. The three trigonometric ratios; sine, cosine and tangent are used to calculate angles and lengths in right-angled triangles.

Sketch the graph of the curve whose equation in polar coordinates is \(r=3\cos 3\theta\text{.}\) Sketch the curve whose polar equation is \(r=-1+\cos \theta\text{,}\) indicating any symmetries. Mark ...