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If the circles x2+y2-8x+2y+8=0 and x2+y2-2x-6y-a2=0 have exactly two common tangents, then prove that 2

If the circles x2+y2-8x+2y+8=0 and x2+y2-2x-6y-a2=0 have exactly two common tangents, then prove that 2

Grade:12th pass

2 Answers

Deepak Kumar Shringi
askIITians Faculty 4405 Points
3 years ago
incomplete question but you can solve it by
c1c2=r1+r2
kkbisht
90 Points
3 years ago
Dear deepak ,
                    My qustions is what exactly you need to prove ?The definition and equation of two  circles is ok but what the student wants to prove that is not clear.
Please specify  that. I will answer any thing you want to ask but specify clearly?

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