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10 questions from this quiz
Angle anticlockwise from positive x-axis
2a2a2a
4
A=12∫abr2dθA = \frac{1}{2}\int_a^b r^2 d\thetaA=21∫abr2dθ
The formula is derived from 12r2θ\frac{1}{2}r^2\theta21r2θ
When sinθ=−1\sin\theta = -1sinθ=−1
rrr represents distance from the origin
cos2(x)=1+cos(2x)2\cos^2(x) = \frac{1 + \cos(2x)}{2}cos2(x)=21+cos(2x)
333
Sketch curves & find intersection points
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