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If the circle x^(2) + y^(2) + 4x + 2y + ...

If the circle `x^(2) + y^(2) + 4x + 2y + c = 0` bisects the cirucumference of the cirlce `x^(2) + y^(2) -2x -8y -d = 0` then c + d =

A

60

B

`-46`

C

40

D

56

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH INSTITUTE-CONIC SECTIONS-SECTION-B
  1. The length of intercept on the straight line 3x + 4y -1 = 0 by the cir...

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  2. Locus of middle point of intercept of any tangent with respect to the ...

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  3. If the circle x^(2) + y^(2) + 4x + 2y + c = 0 bisects the cirucumferen...

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  4. If length of the common chord of the circles x^2 + y^2 + 2x + 3y + 1 =...

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  5. The distance between the chords of contact of tangents to the circle x...

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  6. Two perpendicular tangents to the circle x^2 + y^2= a^2 meet at P. The...

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  7. Through a fixed point (h, k) secants are drawn to the circle x^(2) + y...

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  8. The equation of circle passing through the point (1, 1) and point of i...

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  9. Show that the area of the triangle formed by the pósitive x-axis and t...

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  10. A variable chord is drawn through the origin to the circle x^2+y^2-2a ...

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  11. Obtain the equation of the circle orthogonal to both the circles x^2+y...

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  12. The equation of a circle which touches the line x +y= 5 at N(-2,7) and...

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  13. If centre of a circle lies on the line 2x - 6y + 9 =0 and it cuts the ...

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  14. Locus of thews of the centre of the circle which touches x^2+y^2 - 6x-...

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  15. If 3x+y=0 is a tangent to a circle whose center is (2,-1) , then find ...

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  16. Find the area of the triangle formed by the tangents from the point (4...

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  17. If the chord of contact of the tangents drawn from a point on the c...

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  18. Find the locus of the point of intersection of tangents to the circle ...

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  19. A circle of constant radius 2r passes through the origin and meets the...

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  20. A square is inscribed in the circle x^2+y^2-2x+4y+3=0 . Its sides are ...

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