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A straight line moves such that the alge...

A straight line moves such that the algebraie-sum of the perpendiculars drawn to it from two fixed points is equal to 2k. Then the straighi line always touches a fixed circle of radius

A

2k

B

k/2

C

k

D

none

Text Solution

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The correct Answer is:
C
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DIPTI PUBLICATION ( AP EAMET)-CIRCLE-Exercise 1A(Circle)
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  2. The straight lines joining the origin to the points of intersectiion o...

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  3. A straight line moves such that the algebraie-sum of the perpendicular...

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  4. If the base of a triangle and the ratio of the lengths of the other tw...

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  5. The condition that the chord a x cos alpha +y sin alpha -p=0" of "x^(2...

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  6. An equilateral triangle is inscribed in the circle x^(2)+y^(2)=a^(2). ...

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  7. If an equilateral triangle is inscribed in the circle x^(2)+y^(2)-6x-4...

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  8. A circle of radius r passes through the origin and meets the axes at A...

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  9. A=(cos theta, sin theta) and B=(sin theta,-cos theta) are two points. ...

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  10. The equation of the circle which passes through the origin and cuts of...

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  11. The equation of the circle concentric with x^(2)+y^(2)-2x+8y-23=0 and ...

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  12. The equation of the circle concentric with x^(2)+y^(2)-6x+4y-3=0 and h...

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  13. The equation of the circle concentric with the circle x^(2)+y^(2)-6x+1...

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  14. The equation of the circle passing through the points of intersection ...

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  15. The equation of the circle passing through (0,0), (0,a), (a,0) is

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  16. The equation of the circle passing through the points (1, 1),(2,-1),(3...

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  17. The circle passing through the points (1, t), (t, 1) and (t, t) for al...

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  18. The centre of the circle passing through the points (a,b),(a,-b),(a+b,...

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  19. The points (1, 1), (- 6, 0), (-2, 2). (-2,-8) are

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  20. If the points (2, 3), (0, 2), (4, 5) and (0, t) are concyche, then t=

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