1.

A circle C whose radius is 1 unit, thuches the x-axis at point A. The centre Q of C lies in first quadrant. The tangent from origin O to the circle touches it at T and a point P lies on it such that Delta OAP is a right angled triangle at A and its perimeter is 8 units. Equation of the larger circle which touches the tangents drawn from origin to the circle C and the circle C extermally is

Answer»

`{x -2 (2 - sqrt3)} ^(2) + (y-2) ^(2) =4`
`{x-2 (2+ sqrt3) }^(2) + {y-2(7 +2SQRT3)} ^(2) = 4(7 +2 sqrt3) ^(2)`
`{x -3(2 -sqrt3)}^(2) + (y-3)^(2) =9`
none of these

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