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Polar to Cartesian

  • Thread starter RESmonkey
  • Start date
  • #1
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Homework Statement



Replace the polar equation by an equivalent Cartesian (rectangular) equation. Then identify or describe the graph.

****Let's just make x = theta because I can't find a theta symbol*****

r = 2cos(x) + 2sin(x)


Homework Equations



none?

The Attempt at a Solution



x = rcos(x) = (2cos(x) + 2sin(x)) * cos(x)
y = rsin(x) = (2cos(x) + 2sin(x)) *sin(x)

No idea what do to from here.


Thanks in advance
 

Answers and Replies

  • #2
benorin
Homework Helper
1,085
14
Try multiplying [itex]r = 2\cos\theta + 2\sin\theta[/itex] through by [itex]r[/itex].
 

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