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10 questions from this quiz
555
−π<θ≤π-\pi < \theta \leq \pi−π<θ≤π
121212
π2\frac{\pi}{2}2π
Circle, centre (2,−3)(2,-3)(2,−3), radius 555
Half-line from (0,4)(0,4)(0,4) at angle π4\frac{\pi}{4}4π
Perpendicular bisector of segment from 111 to 555
Interior of circle, centre (3,0)(3,0)(3,0), radius 222
7π6\frac{7\pi}{6}67π
rcosθr\cos\thetarcosθ
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