Greenrune113 Greenrune113

24-04-2018
Mathematics

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Q7 Q31.) Convert the rectangular equation to a polar equation that expresses r in terms of θ.

Q7 Q31 Convert the rectangular equation to a polar equation that expresses r in terms of θ class=

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30-04-2018

x^2 + (y-2)^2 = 4 is a circle centered at (0,2) with radius=2, touching the x-axis

when converting this circle to a polar equation in term of r and θ:

r is a chord w/ one end at (0,0)

θ is a tangent chord angle formed by the x-axis and r

by properties of tangent chord angle, r=2*radius*sinθ

r=4sinθ

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