and are the foci of the ellipse and is an end of the minor axis. If is an equilateral triangle, then eccentricity of the ellipse is |
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a) |
b) |
c) |
d) |
and are the foci of the ellipse and is an end of the minor axis. If is an equilateral triangle, then eccentricity of the ellipse is |
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a) |
b) |
c) |
d) |