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If the two circles x^(2) + y^(2) + ax =...

If the two circles ` x^(2) + y^(2) + ax = 0 " and " x^(2) + y^(2) = c^(2)` , where ` a, c gt 0 ` , touch each other intenally , then :

A

`a ^(2) +c ^(2) =1`

B

`a ^(2) -c ^(2) =0`

C

`a ^(2) -c ^(2) =1`

D

none of these

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • If two circles x^(2) + y^(2) - 2ax + c = =0 and x^(2) + y^(2) - 2by + c = 0 touch each other , then c =

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    `f_(1) g = f g _(1)`
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