looly565 looly565
  • 03-12-2017
  • Mathematics
contestada

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

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altavistard
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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