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The external centre of similitude of the...

The external centre of similitude of the two circles `x^(2)+y^(2)-2x-6y+9=0, x^(2)+y^(2)=4` is

A

(1,3)

B

(2,6)

C

(3,9)

D

(1,2)

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The correct Answer is:
B
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AAKASH SERIES-CIRCLES-PRACTICE EXERCISE
  1. The number of common tangents to x^(2)+y^(2)=4,(x-3)^(2)+(y-4)^(2)=9 i...

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  2. The internal cent re of similitude of two circles (x-2)^(2)+(y-3)^(2)=...

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  3. The external centre of similitude of the two circles x^(2)+y^(2)-2x-6y...

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  4. It is not possible to find the equation of a cicle I: If radius cent...

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  5. Read of the following two statements I: sqrt(3)x-y+4=0 is tangent to...

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  6. The number of parameters of the equation ax^(2)+ay^(2)+2fy+c=0 is

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  7. If the circles x^(2)+y^(2)=a^(2), x^(2)+y^(2)-6x-8y+9=0 touch external...

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  8. The condition that the circles x^(2)+y^(2)+2ax+c=0, x^(2)+y^(2)+2by+c=...

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  9. The equation to the circle whose radius is 3 and which touches interna...

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  10. A circle of radius 2 units rolls inside the ring of the circle x^(2)+y...

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  11. If 4y=x +7 is a diameter of the circumscribing circle of the rectangle...

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  12. The area of the quadrilateral formed by the tangents from the point (4...

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  13. The area (in sq units) of the triangle formed by the tangent, normal a...

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  14. The area of the triangle formed with coordinate axes and the tangent a...

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  15. The area of the triangle formed by the tangents from (1,3) to the circ...

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  16. The area of an equilateral triangle inscribed in the circle x^(2)+y^(2...

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  17. A right angled isoceles triangle is inscribed in the circle x^(2)+y^(2...

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  18. Observed the following statements I: The intercepts of the circle x^...

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  19. The polar of p with respect to a circle s=x^(2)+y^(2)+2gx+2fy+c=0 with...

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  20. Given that p(x(1),y(1)) is interior point of the circle S=x^(2)+y^(2)+...

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