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If x^(2)+y^(2)+6x+2ky+25=0 to touch y-ax...

If `x^(2)+y^(2)+6x+2ky+25=0` to touch y-axis then k=

A

`pm 20`

B

`+5,-5`

C

`pm2`

D

4

Text Solution

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-CIRCLE-Exercise 1B(Circle-Line)
  1. The circle 4x^(2)+4y^(2)-12x-12y+9=0

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  2. If x^(2)+y^(2)-4x-6y+k=0 touches x-axis then k=

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  3. If x^(2)+y^(2)+6x+2ky+25=0 to touch y-axis then k=

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  4. Find the equation of the circle with centre (-3, 4) and touching y-...

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  5. Find the equation of the circle with centre (-3, 4) and touching y-...

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  6. The equation of a circle with centre (4,1) and having 3x+4y-1=0 as tan...

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  7. The equation of the circle touching both axes, lying in the first quad...

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  8. The equation of the circle of radius 3 that lies in the fourth quadran...

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  9. The equation of the cirlce touching both the axes lying in the third q...

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  10. The equation of the circle passing through (2,1) and touching the coor...

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  11. The equation of the circles touching the coordinate axes and passing t...

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  12. The equation of the circles touching the axes at (5,0) and (0,5) is

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  13. The equation of the cirles touch the x-axis (3,0) and make an intercep...

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  14. The centre of the circle touching the y-axis at (0,3) and making an in...

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  15. Equation of the circle touching the y-axis at (0,sqrt3) and cuts the x...

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  16. The equation of the circles which touch the x-axis at the origin and t...

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  17. The equation of the circles which touch the y-axis at the origin and t...

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  18. The equation of the circle touching the y-axis at the origin and passi...

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  19. The equation of the cirles touching the coordinate axes and the line x...

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  20. The equation of a circle touching the coordinate axes and the line 3x-...

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