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If the circles x^2 + y^2 + 2x + 2ky + 6 ...

If the circles `x^2 + y^2 + 2x + 2ky + 6 = 0` and `x^2 + y^2 + 2ky + k = 0` intersect orthogonally, then k is equal to _____

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CENGAGE PUBLICATION-CONIC SECTIONS-All Questions
  1. A straight line l1 with equation x-2y+10=0 meets the circle with equat...

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  2. Let C be a circle with two diameters intersecting at an angle of 30^0d...

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  3. If the circles x^2 + y^2 + 2x + 2ky + 6 = 0 and x^2 + y^2 + 2ky + k = ...

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  4. The triangle PQR is inscribed in the circle x^2+y^2=25. If Q and R hav...

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  5. A circle is given by x^2 + (y-1) ^2 = 1, another circle C touches it e...

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  6. If one of the diameters of the circle x^2+y^2-2x-6y+6=0 is a chord to ...

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  7. The centre of circle inscribed in a square formed by lines x^2-8x+12...

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  8. If the tangent at the point P on the circle x^2+y^2+6x+6y=2 meets the ...

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  9. Consider square A B C D of side length 1. Let P be the set of all segm...

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  10. The number of intergral value of y for which the chord of the circle x...

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  11. Statement 1 : The circle having equation x^2+y^2-2x+6y+5=0 intersects ...

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  12. Statement 1 : The center of the circle having x+y=3 and x-y=1 as its n...

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  13. Statement 1 : The equations of the straight lines joining the origin...

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  14. Statement 1 : Points A(1,0),B(2,3),C(5,3),a n dD(6,0) are concyclic. S...

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  15. Statement I The chord of contact of tangent from three points A, B and...

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  16. Statement 1 : The equation x^2+y^2-2x-2a y-8=0 represents, for differe...

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  17. The circles having radii r1 and r2 intersect orthogonally. Length of t...

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  18. Tangents P A and P B are drawn to x^2+y^2=9 from any arbitrary point P...

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  19. The two circles which passes through (0,a) and (0,-a) and touch the li...

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  20. If the pair of straight lines x ysqrt(3)-x^2=0 is tangent to the circl...

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