SOLUTION: Find in polar coordinates the equation of the circle,whose centre is(2,180÷2) and radius 3?

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Question 958998: Find in polar coordinates the equation of the circle,whose centre is(2,180÷2) and radius 3?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Center at (2,90) with radius 3.
%28x-2%29%5E2%2B%28y-90%29%5E2=9
%28rcos%28theta%29-2%29%5E2%2B%28rsin%28theta%29-90%29%5E2=9

r%5E2-4rcos%28theta%29-180rsin%28theta%29=-8095
r%5E2-4r%28cos%28theta%29%2B45sin%28theta%29%29=-8095