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A circle x^2+y^2+4x-2sqrt(2)y+c=0 is the...

A circle `x^2+y^2+4x-2sqrt(2)y+c=0` is the director circle of the circle `S_1a n dS_1` is the director circle of circle `S_2,` and so on. If the sum of radii of all these circles is 2, then the value of `c` is `ksqrt(2)` , where the value of `k` is___________

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CENGAGE PUBLICATION-CONIC SECTIONS-All Questions
  1. If x , y in R satisfies (x+5)^2+(y-12)^2=(14)^2, then the minimum val...

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  2. Show that a cyclic quadrilateral is formed by the lines 5x+3y=9,x=3y ,...

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  3. A circle x^2+y^2+4x-2sqrt(2)y+c=0 is the director circle of the circle...

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  4. A point P moves in such a way that the ratio of its distance from two ...

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  5. The sum of the slopes of the lines tangent to both the circles x^2+y^2...

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  6. Prove that the maximum number of points with rational coordinates on a...

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  7. Let C1 and C2 are circles defined by x^2+y^2 -20x+64=0 and x^2+y^2+...

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  8. Prove that for all values of theta , the locus of the point of interse...

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  9. The chord of contact of tangents from a point P to a circle passes thr...

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  10. Find the length of the chord x^2+y^2-4y=0 along the line x+y=1. Also f...

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  11. The chords of contact of tangents from three points A ,Ba n dC to the ...

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  12. Tangents are drawn to the circle x^2+y^2=a^2 from two points on the ax...

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  13. The common chord of the circle x^2+y^2+6x+8y-7=0 and a circle passing ...

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  14. P is the variable point on the circle with center at C. C A and C B ar...

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  15. If the angle between the tangents drawn to x^2+y^2+2gx+2fy+c=0 from (0...

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  16. Find the locus of center of circle of radius 2 units, if intercept cut...

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  17. Any circle through the point of intersection of the lines x+sqrt(3)y=1...

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  18. A straight line moves so that the product of the length of the perp...

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  19. The number of such points (a+1,sqrt3a), where a is any integer, lying...

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  20. A tangent is drawn to each of the circles x^2+y^2=a^2 and x^2+y^2=b^2d...

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