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A circle is drawn to pass through the extremities of the latus rectum of the parabola `y^2=8xdot` It is given that this circle also touches the directrix of the parabola. Find the radius of this circle.

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CENGAGE ENGLISH-CONIC SECTIONS-All Questions
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  2. If A B is a focal chord of x^2-2x+y-2=0 whose focus is S and A S=l1, t...

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  3. A circle is drawn to pass through the extremities of the latus rectum ...

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  4. Circles drawn on the diameter as focal distance of any point lying on...

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  5. If the length of a focal chord of the parabola y^2=4a x at a distance ...

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  6. Find the equation of the parabola whose focus is S(-1,1) and directrix...

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  7. If x^2 + y^2 = log(xy) , find dy/dx .

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  8. If (2,-8) is at an end of a focal chord of the parabola y^2=32 x , the...

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  9. Prove that the length of the intercept on the normal at the point P(a ...

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  10. Find the minimum distance between the curves y^2=4x and x^2+y^2-12 x+3...

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  11. If y=2x+3 is a tangent to the parabola y^2=24 x , then find its distan...

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  12. Three normals to y^2=4x pass through the point (15, 12). Show that one...

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  13. Find the locus of the point from which the two tangents drawn to the ...

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  14. Find the angle between the tangents drawn from the origin to the parab...

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  15. Find the locus of the point of intersection of the perpendicular ta...

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  16. Three normals are drawn from the point (7, 14) to the parabola x^2-8x-...

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  17. Find the equation of normal to the parabola y=x^2-x-1 which has equal ...

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  18. If y=x+2 is normal to the parabola y^2=4a x , then find the value of a...

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  19. Find the equations of normal to the parabola y^2=4a x at the ends of t...

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  20. The coordinates of the ends of a focal chord of the parabola y^2=4a x ...

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