Posted by **amaa** on Friday, November 30, 2012 at 3:54am.

Find the vertices, foci, and eccentricity of the ellipse. Thank you.

x^2/16 + y^2/25 = 1

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**Reiny**, Friday, November 30, 2012 at 8:29am
a^2 = 16 ---> a=4

b^2 = 25 ---> b = 5

major axis along the y-axis,

vertices (4,0) , (-4,0) , (0,5) , (0, -5)

c^ + 4^2 = 5^2

c = ±3

foci : (0,3) , (0, -3)

e = c/b for an ellipse like that

= 3/5

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