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Position of a Point with Respect to Circle

18. Consider ...

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{ 18. Consider the lines }2x-y=-1 and }x-2y=-5. The circle }}{ of radius }2 that lies completely in the first quadrant and }}{ is tangent to both lines has centre at the point }(a,b). The }}{ value of }(ab) is equal to

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Position of a Point with Respect to Circle

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