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From a point R(5,8) , two tangents R Pa ...

From a point `R(5,8)` , two tangents `R Pa n dR Q` are drawn to a given circle `S=0` whose radius is 5. If the circumcenter of triangle `P Q R` is (2, 3), then the equation of the circle `S=0` is a `x^2+y^2+2x+4y-20=0` b `x^2+y^2+x+2y-10=0` c `x^2+y^2-x+2y-20=0` d `x^2+y^2+4x-6y-12=0`

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CENGAGE PUBLICATION-CONIC SECTIONS-All Questions
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  2. On the line segment joining (1, 0) and (3, 0) , an equilateral triangl...

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  3. From a point R(5,8) , two tangents R Pa n dR Q are drawn to a given ci...

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  4. Find the equations of the circles passing through the point (-4,3) and...

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  5. Let A be the centre of the circle x^2+y^2-2x-4y-20=0 Suppose that the ...

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  6. If r1and r2 are the radii of smallest and largest circles which passes...

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  7. From an arbitrary point P on the circle x^2+y^2=9 , tangents are drawn...

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  8. If C1: x^2+y^2=(3+2sqrt(2))^2 is a circle and P A and P B are a pair o...

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  9. The minimum radius of the circle which is orthogonal with both the c...

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  10. If a circle of radius r is touching the lines x^2-4x y+y^2=0 in the ...

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  12. Two circles of radii a and b touching each other externally, are inscr...

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  13. Let C be any circle with centre (0,sqrt(2))dot Prove that at most two ...

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  14. Let a circle be given by 2x(x-a)+y(2y-b)=0,(a!=0,b!=0) . Find the cond...

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  15. Consider a family of circles passing through the points (3, 7) and (6,...

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  16. Let xa n dy be real variables satisfying x^2+y^2+8x-10 y-40=0 . Let a=...

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  17. A(1/(sqrt(2)),1/(sqrt(2))) is a point on the circle x^2+y^2=1 and B is...

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  18. Tangent drawn from the point (a ,3) to the circle 2x^2+2y^2=25 will be...

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  19. Consider the circle x^2 + y^2 - 10x - 6y + 30 = 0 Let O be the centre ...

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