Polar Coordinates (AQA A-Level Further Maths): Quizzes

The fixed reference point

Angle from initial line, anticlockwise

$(-2, \frac{4\pi}{3})$

$r \geq 0$ and $-\pi < \theta \leq \pi$

$x = r\cos\theta$

$r^2 = x^2 + y^2$

Circle of radius $a$ at the pole

A half-line (ray) from the pole

It can remove inner loops

Coordinates are not unique