SOLUTION: Write the rectangular equation in polar form. X^2+(y-2)^2 =4

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Question 1036836: Write the rectangular equation in polar form.
X^2+(y-2)^2 =4
Answer by ikleyn(52772) About Me  (Show Source):
You can put this solution on YOUR website!
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Write the rectangular equation in polar form.
X^2+(y-2)^2 =4
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 

In polar form, 

x = r%2Acos%28alpha%29, y = r%2Asin%28alpha%29.    (1)

So, substitute/plug-in the expressions (1) into the original equation


%28r%2Acos%28alpha%29%29%5E2+%2B+%28r%2Asin%28alpha%29-2%29%5E2 = 4,


and then simplify it.