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An isosceles triangle ABC is inscribed i...

An isosceles triangle ABC is inscribed in a circle `x^2+y^2=a^2` with the vertex A at `(a,0)` and the base angle B and C each equal to 75°, then co-ordinates of an end point of the base are

A

`a//2`

B

`a`

C

`2a//sqrt3`

D

`sqrt3 a//2`

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The correct Answer is:
B
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