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The sum of the radii of inscribed and ci...

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

A

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

B

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

C

`(a)/(4)cos((pi)/(2n))`

D

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

Text Solution

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The correct Answer is:
A
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