looly565 looly565

03-12-2017
Mathematics

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Find the polar equation for the curve represented by the given cartesian equation x+y=4

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altavistard altavistard

03-12-2017

Remember that x =r cos theta and y = r sin theta. Thus,

x + y = r (cos theta + sin theta) = 4, or

r (cos theta + sin theta) = 4, or
4
r = -------------------------------
cos theta + sin theta

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