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10 questions from this quiz
The fixed reference point
Angle from initial line, anticlockwise
(−2,4π3)(-2, \frac{4\pi}{3})(−2,34π)
r≥0r \geq 0r≥0 and −π<θ≤π-\pi < \theta \leq \pi−π<θ≤π
x=rcosθx = r\cos\thetax=rcosθ
r2=x2+y2r^2 = x^2 + y^2r2=x2+y2
Circle of radius aaa at the pole
A half-line (ray) from the pole
It can remove inner loops
Coordinates are not unique
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