Define two circles tangent to the -axis by:

Sketch this graph in polar coordinates and compute the area of the radial set.

The sketch is as follows:

Then, we compute the area,

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Stumbling Robot

A Fraction of a Dot
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Sketch two circles tangent to the y-axis and compute their area from 0 to 2 π

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### Point out an error, ask a question, offer an alternative solution (to use Latex type [latexpage] at the top of your comment):

Define two circles tangent to the -axis by:

Sketch this graph in polar coordinates and compute the area of the radial set.

The sketch is as follows:

Then, we compute the area,

Can also pretty much use problem 6 except modify interval of integration (function being integrated is same as in problem 6)