Home
Class 12
MATHS
If x+y+k=0 is a tangent to the circle x^...

If x+y+k=0 is a tangent to the circle `x^(2)+y^(2)-2x-4y+3=0" then k"=`

A

`pm 20`

B

`-1,-5`

C

`pm 2`

D

4

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CIRCLE

    DIPTI PUBLICATION ( AP EAMET)|Exercise Exercise 1C(Pole, Polar)|107 Videos

  • CIRCLE

    DIPTI PUBLICATION ( AP EAMET)|Exercise Exercise 1D(Angle Between Circles)|49 Videos

  • CIRCLE

    DIPTI PUBLICATION ( AP EAMET)|Exercise Exercise 1A(Circle)|110 Videos

  • BINOMIAL THEOREM

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 (SPECIAL TYPE QUESTIONS) SET - 4|4 Videos

  • COMPLEX NUMBERS

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 (SPECIAL TYPE QUESTIONS) (SET - 4)|5 Videos

Similar Questions

Explore conceptually related problems

If 3x+4y+k=0 is a tangent to the circle x^(2)+y^2=16" then k"=

If y+c=0 is a tangent to the circle x^(2)+y^(2)-6x-2y+1=0 at (a, 4), then

In the line 3x-y= k is a tangent to the hyperbola 3x^(2) -y^(2) =3 ,then k =

If x+y+k=0 is a tangent to the parabola x^(2)=4y then k=

If kx+3y=1, 2x+y+5=0 are conjugate liens w.r.t the circle x^(2)+y^(2)-2x-4y-4=0 then k=

If 2kx + 3y - 1 = 0 , 2x + y + 5 = 0 are conjugate lines with respect to the circle x^(2) +y^(2) - 2x - 4y - 4 = 0 , t hen k =

If the line x-y+k =0 is a tangent to the parabola x^(2) = 4y then k =

If the lines kx + 2y -4 = 0 and 5x - 2y - 4 = 9 are conjugate with respect to the circle x^(2) + y^(2) - 2x - 2y + 1 = 0 , then k =

DIPTI PUBLICATION ( AP EAMET)-CIRCLE-Exercise 1B(Circle-Line)
  1. If 3x+4y+k=0 is a tangent to the circle x^(2)+y^2=16" then k"=

    Text Solution

    |

  2. If the line y=2x+c is a tangent to the circle x^(2)+y^(2)=5 then a val...

    Text Solution

    |

  3. If x+y+k=0 is a tangent to the circle x^(2)+y^(2)-2x-4y+3=0" then k"=

    Text Solution

    |

  4. The line x cos alpha+y sin alpha=p touches the circle x^(2)+y^(2)-2ax ...

    Text Solution

    |

  5. The slope m of a tangent through the point (7,1) to the circle x^(2)+y...

    Text Solution

    |

  6. The equation of the tangent to the circle x^(2)+y^(2)+2x+2y-7=0 which ...

    Text Solution

    |

  7. Equation of the tangent to the circle x^(2)+y^(2)=3, which is inclined...

    Text Solution

    |

  8. The radius of the circle which has the lines x+y-1=0 , x+y-9=0 as teng...

    Text Solution

    |

  9. The radius of any circle touching the lines 3x-4y+5=0, 6x-8y-9=0" is "

    Text Solution

    |

  10. If the lines 3x+4y-14=0 and 6x+8y+7=0 are both tangents to a circle, t...

    Text Solution

    |

  11. How many circles can be drawn each touching all the three lines x+y=1,...

    Text Solution

    |

  12. The number of circles that touches all the three lines x+y-1=0, x-y-1=...

    Text Solution

    |

  13. If the equatio of one tangent to the circle with centre (2,-1) from th...

    Text Solution

    |

  14. If y=3x is a tangent to a circle with centre (1,1) then the other tang...

    Text Solution

    |

  15. The equation of the tangents to the circle x^(2)+y^(2)-4x-6y-12=0 and ...

    Text Solution

    |

  16. The equation of the tangent to the circle x^(2)+y^(2)+8x-4y-5=0 and pe...

    Text Solution

    |

  17. The equation of the tangents to the circle x^(2)+y^(2)-2x+8y-23=0 and ...

    Text Solution

    |

  18. The equation of the tangent to the circle x^(2)+y^(2)=16 which are inc...

    Text Solution

    |

  19. The equation of the tangent to the circle x^(2)+y^(2)+4x-4y+4=0 which ...

    Text Solution

    |

  20. x^(2)+y^(2)-4x-6y+9=0 and (x+3)^(2)+(y+2)^(2)=25 are two circles. The ...

    Text Solution

    |