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The circles x^(2)+y^(2)+6 x+k=0 and x^(...

The circles` x^(2)+y^(2)+6 x+k=0` and
`x^(2)+y^(2)+8 y-20=0` touch each other internally. The value of `k` is

A

6

B

9

C

8

D

4

Text Solution

Verified by Experts

The correct Answer is:
C
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HIMALAYA PUBLICATION-CIRCLES-QUESTION BANK
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  3. The circles x^(2)+y^(2)+6 x+k=0 and x^(2)+y^(2)+8 y-20=0 touch each o...

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  4. The area of the circle x^(2)+y^(2)-2 x+4 y-4=0 is

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  5. The points (1,0),(0,1),(0,0) and (2k,3k),k!=0 are concyclic if k =

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  6. From any point on the circle x^(2)+y^(2)=a^(2), tangtnts are drawn to...

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  7. Angle between tangents drawn from a point on the director circle x^(2...

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  8. Two tangents drawn from P(7,1) to the circle x^(2)+y^(2)=25 touches t...

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  9. The ltngth of the tangtnt from (5,3) to the circle x^(2)+y^(2)+10 x+k...

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  10. The equation of the tangtnt to the circle x^(2)+y^(2)-2 x+8 y-23=0 ha...

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  12. The equation of the circle having centre (1, 2) and passing through th...

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