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Question

The parametric eqauation of the circle x2+y22x4y4=0 is .

A
x=13cos θ, y=2+3sin θ
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B
x=1+3cos θ, y=23sin θ
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C
x=1+3cos θ, y=2+3sin θ
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D
x=13cos θ, y=23sin θ
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Solution

The correct option is C x=1+3cos θ, y=2+3sin θ
We have,
x2+y22x4y4=0(x22x+1)+(y24y+4)=9(x1)2+(y2)2=32
Hence the parametric form of the given circle will be :
x=1+3cos θ, y=2+3sin θ

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