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Question

Find the coordinates of the foci and the vertices the eccentricity and the length of the latus rectum of the hyperbola x216y29=1

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Solution

The given equation is x216y29=1 or x242y232=1
On comparing this equation with the standard equation of hyperbola i.e.,
x2a2y2b2=1
We obtain a=4 and b=3
We know that a2+b2=c2, where c=ae
c2=42+32=25
c=5
Therefore, the coordinates of the foci are (±5,0)
The coordinates of the vertices are (±4,0)
Eccentricity e= ca=54
Length of latus rectum =2b2a=2×94=92

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