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The sum of radii of inscribed and circum...

The sum of radii of inscribed and circumscribed circles of an `n` sided regular polygon of side `a` is

A

`a cot (pi/n)`

B

`a/2 cot (pi/(2n))`

C

`a cot (pi/(2n))`

D

`a/2 cot (pi/n)`

Text Solution

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The correct Answer is:
B
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