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Problem
For the ellipse
x
2
25
+
y
2
9
=
1
\frac{x^{2}}{25}+\frac{y^{2}}{9}=1
25
x
2
+
9
y
2
=
1
, answer the following: a. (i) Find the coordinates of its centre. b. (ii) Find the coordinates of its vertices and co-vertices. c. (iii) Find the coordinates of its foci.
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