Circle in polar coordinates

TsAmE

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Aug 28, 2010
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Describe the region inside the circle (x - 1)^2 + y^2 = 1 and to the right of the line x = 1 in polar coordinates.

Attempt:

(refer to attachment).

How would you represent the part of the circle (to the right of x = 1) as a polar equation?
 

Attachments

  • Circle.png
    Circle.png
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x=1 should be a diameter.

How would you represent (x-1)[sup:27axno29]2[/sup:27axno29] + y[sup:27axno29]2[/sup:27axno29] = 1 in polar co-ordinate?

.
 
\(\displaystyle x = r\cdot\cos(\theta)\)

\(\displaystyle y = r\cdot\sin(\theta)\)

Substitute and do some algebra.
 
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