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If PSP' is a focal chord of the ellipse `(x^(2))/(7)+(y^(2))/(9)=1` then `(SP.SP')/(SP+SP')`=

A

`7/3`

B

`7/6`

C

`(9)/sqrt(7)`

D

`(7)/sqrt(3)`

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The correct Answer is:
B
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AAKASH SERIES-ELLIPSE-EXERCISE-I
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  9. The eccentricity of the ellipse (x-1)^(2)/(16)+(y-2)^(2)/(9)=1 is

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  10. The eccentricity of the ellipse 9x^(2)+25y^(2)-18x-100y+20=0 is

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  12. If the length of the major axis is n times the minor axis of the ellip...

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  16. If e(1) and e(2) are the eccentricites of (x^(2))/(a^(2))+(y^(2))/(b...

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  17. The equation of the tangent to the ellipse 9x^(2)+16y^(2)=144 at the ...

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