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Show that equation x^2+y^2-2ay-8=0 repr...

Show that equation `x^2+y^2-2ay-8=0` represents, for different values of 'a, asystem of circles"passing through two fixed points A, B on the X-axis, and find the equation ofthat circle of the system the tangents to which at AB meet on the line `x+ 2y + 5 = 0`.

A

`x^(2) + y^(2) - 2x - 8y -8 = 0`

B

`x^(2) + y^(2) - 2x + 6y - 8 = 0`

C

`x^(2) + y^(2) - 2x + 8y - 8 = 0`

D

`x^(2) + y^(2) - 2x - 6y - 8 = 0 `

Text Solution

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The correct Answer is:
D
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AAKASH INSTITUTE-CONIC SECTIONS-SECTION -D
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  3. Show that equation x^2+y^2-2ay-8=0 represents, for different values o...

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