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10 cards from this deck
Distance from the origin (the pole)
Angle measured anticlockwise from positive x-axis
r=a(1+cosθ)r = a(1 + \cos\theta)r=a(1+cosθ) or r=a(1+sinθ)r = a(1 + \sin\theta)r=a(1+sinθ)
2a2a2a
000
nnn loops
A=12∫abr2dθA = \frac{1}{2}\int_a^b r^2 d\thetaA=21∫abr2dθ
Radians
1−cos(2x)2\frac{1 - \cos(2x)}{2}21−cos(2x)
1+cos(2x)2\frac{1 + \cos(2x)}{2}21+cos(2x)
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