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The radius of the director circle of the...

The radius of the director circle of the hyperbola `(x^(2))/(25)-(y^(2))/(9)=1` is:

A

5

B

3

C

8

D

25

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The correct Answer is:
A
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The eccentricity of the hyperbola (y^(2))/(9)-(x^(2))/(25)=1 is …………………

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Statement 1 : If from any point P(x_1, y_1) on the hyperbola (x^2)/(a^2)-(y^2)/(b^2)=-1 , tangents are drawn to the hyperbola (x^2)/(a^2)-(y^2)/(b^2)=1, then the corresponding chord of contact lies on an other branch of the hyperbola (x^2)/(a^2)-(y^2)/(b^2)=-1 Statement 2 : From any point outside the hyperbola, two tangents can be drawn to the hyperbola.

PREMIERS PUBLISHERS-TWO DIMENSIONAL ANALYTICAL GEOMETRY - II -PROBLEMS FOR PRACTICE
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  2. The radius of the director circle of the hyperbola (x^(2))/(25)-(y^(2)...

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  3. If 4x+y+k=0 is a tangent to the ellipse x^(2)+3y^(2)=3 then k = ?

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  4. The tangent to the hyperbola 3x^(2)-y^(2)=3 parallel to 2x-y+4=0 is:

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  5. The eccentricity of the ellipse for which the distance between the dir...

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  6. The radius of the director circle of the hyperbola (x^(2))/(25)-(y^(2)...

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  7. In are ellispe , the distance between its foci is 6 and its minor axi...

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  8. The tangents at the points t(1) and t(2) on the parabola y^(2)=4ax are...

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  9. The equation of normal at (-3,4) to the circle x^(2)+y^(2)=25 is 4x+3y...

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  10. The equation of the ellipse with foci (pm2,0) vertices (pm3,0) is:

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  11. Identify the type of the conic 3x^(2)-8y^(2)-15x-18y-29=0

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  12. Area of the greatest rectangle inscribed in the ellipse (x^(2))/(16)+(...

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  14. Find the odd man one with respect to the eccentricity of the following...

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  15. Find the position of the point (0,-1) with respect to the circle x^(2)...

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  16. Find the correct statement:

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  17. Find the incorrect statement:

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  18. Find the correct statement:

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  19. Find out the incorrect statement:

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  20. Find the correct pair of statements: (i) The point of intersection o...

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