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Find the sum of the radii of the fcircle...

Find the sum of the radii of the fcircles, which are respectively inscribed and circumscribed about the a regular polygon of n sides.

A

`a/2 tan " pi/n`

B

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

C

`a/2 sin " pi/n`

D

`a/2 cos " pi/n`

Text Solution

Verified by Experts

The correct Answer is:
B
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