Use polar coordinates to solve the following problems, Express the polar equation r= cos2θ r = cos ⁡ 2 θ in rectangular coordinates. Sketch polar graphs of: r= 1+sinθ. r = 1 + sin ⁡ θ . r= cos3θ. r = ...

As the point P moves anticlockwise around the circle from 0°, the angle θ changes. The values of cos θ and sin θ also change. The graphs of y = sin θ and y = cos θ can be plotted.

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. The ...