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![[Post New]](/templates/default/images/icon_minipost_new.gif) 2 Jun 2008 21:40:32 IST
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circles - find the equation of the circle touching the lines x=-1 , y=3 , x=3
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2 Jun 2008 22:35:55 IST
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There are two circles each of radius 2 and centres (1,1) and (1,5).If correct,I will explain.
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MAKING A MISTAKE IS HUMAN BUT REPEATING IT IS IDIOTIC. |
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2 Jun 2008 22:41:51 IST
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the answer given is (2,2) and radius= root 6
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2 Jun 2008 22:50:39 IST
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No,I don't think it is the right answer.If u wanna check,x=-1 and x=3 are parallel tangents.So,the radius of the circle=d/2=4/2=2 where d is the dis. between the lines.Plz check this.
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MAKING A MISTAKE IS HUMAN BUT REPEATING IT IS IDIOTIC. |
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3 Jun 2008 07:52:18 IST
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let centre of d circle b (1,k)
radius = 2 . ther4 (1-1)2+(5-3)2 =4 so k= 5or1 ther4 centre =(1,1) and (1,5) and rad of both is 2 . eqn. found
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