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The parametric representation of a point on the ellipse whose foci are (-1, 0) and (7, 0) and eccentricity 1/2, is

A

`(3+8cos theta , 4 sqrt(3) sin theta )`

B

`(8 cos theta , 4 sqrt(3)) sin theta)`

C

`(3+ 4 sqrt(3)cos theta , 8 sin theta)`

D

none of these

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The correct Answer is:
A
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OBJECTIVE RD SHARMA ENGLISH-ELLIPSE-Exercise
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  2. The eccentricity of the curve x^(2)-4x+4y^(2)=12 is

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  3. The parametric representation of a point on the ellipse whose foci are...

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  4. if S and S are two foci of an ellipse (x^(2))/(a^(2))+(y^(2))/(b^...

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  5. The eccentricity of the ellipse represented by 25 x^2+16 y^2-150 x-175...

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  6. the length of the latusrectum of the ellipse 5x^(2) + 9x^(2)=45...

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  7. The equation of the passing through the of the ellipse (x^(2))/(16)+(y...

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  8. the eccentricity to the conic 4x^(2) +16y^(2)-24x-32y=1 is

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  9. A set of points is such that each point is three times as far away fro...

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  10. the foci of an ellipse are (0+-6) and the equation of the direc...

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  11. An ellipse has its centre at (1,-1) and semi major axis =8 and it pass...

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  12. Let L L ' be the latusrectum and S be a focus of the ellipse (x^...

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  13. the equation of the axes of the ellispe 3x^(2)+4y^(2)+6x-8y-5=0 ...

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  14. the equations to the directrices of the ellipse 4(x-3)^(2)+9(y+2)...

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  15. if the vertices of an ellipse are (-12,4) and (14,4) and eccentr...

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  16. if the coordinates of the vertices of an ellipse are (-6,1) and (...

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  17. if the tangent at the point (4 cos phi , (16)/(sqrt(11) )sin phi ...

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  18. A man running around a race course notes that the sum of the distances...

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  19. Find the angle between the pair of tangents from the point (1,2) to...

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  20. Find the foci of the ellipse 25(x+1)^2+9(y+2)^2=225.

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