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Question

If PSQ is a focal chord of the ellipse 16x2+25y2=400 such that SP = 8 then the length of SQ =

A
2
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B
113
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C
16
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D
25
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Solution

The correct option is A 2
1SP+1SQ=2ab2
a= 5
b=4
Solving we get,
SQ=2.

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