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Two parallel chords are drawn on the sam...

Two parallel chords are drawn on the same side of the centre of a circle of radius R. It is found that they subtend and angle of `theta` and `2theta` at the centre of the circle. The perpendicular distance between the chords is

A

`5(sqrt3 +1)`

B

`10 (sqrt2-1)`

C

`5(sqrt3-1)`

D

`10 (sqrt3-1)`

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The correct Answer is:
D
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