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A polygon of nine sides, each side of le...

A polygon of nine sides, each side of length 2, is inscribed in a circle. The radius of the circle is.....

A

`sec(pi/9)`

B

`cos ec (pi/9)`

C

`cot. (pi/9)`

D

`tan. (pi/9)`

Text Solution

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The correct Answer is:
b
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