The semimajor axis of an ellipse is
A) the ratio of the longest diameter of the ellipse to that of the shortest diameter of the ellipse.
B) half the length of the shortest diameter of the ellipse.
C) half the length of the longest diameter of the ellipse.
D) the distance between the two foci of the ellipse.
E) the ratio of the distance between the two foci to the length of half the longest diameter of the ellipse.
Correct Answer:
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