Figure 4.3.2. Graph of \ (r=1+3\cos (2\theta)\text {?}\) Consider the curve given by the polar equation \ (r=1-2\sin \theta\text {,}\) for \ (0\leq \theta \lt 2\pi\text {.}\) Find the Cartesian ...

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.

4. Consider the polar equation r(3−kcosθ) = 4. r (3 k cos θ) = 4 For what values of the constant k k is this conic section an ellipse? Now assume that k k has the value in the middle of the interval ...

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 ...