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S and T are foci of an ellipse and B...

S and T are foci of an ellipse and B is an end of the minor axis , if STB is an equilateral triangle , the eccentricity of the ellipse , is

A

`1/4`

B

`1/3`

C

`1/2`

D

`2/3`

Text Solution

Verified by Experts

The correct Answer is:
C
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