The sum of the radii of inscribed and circumscribed circles for an n sided regular polygon of side a, is [AIEEE 2003]

\[a\cot \left( \frac{\pi }{2n} \right)\]

\[a\cot \left( \frac{\pi }{n} \right)\]

\[\frac{a}{2}\cot \left( \frac{\pi }{2n} \right)\]

The sum of the radii of inscribed and circumscribed circles for an n s

1.	The sum of the radii of inscribed and circumscribed circles for an n sided regular polygon of side a, is [AIEEE 2003]
A.	\[a\cot \left( \frac{\pi }{n} \right)\]
B.	\[\frac{a}{2}\cot \left( \frac{\pi }{2n} \right)\]
C.	\[a\cot \left( \frac{\pi }{2n} \right)\]
D.	\[\frac{a}{2}\cot \left( \frac{\pi }{2n} \right)\]
Answer» C. \[a\cot \left( \frac{\pi }{2n} \right)\]

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The sum of the radii of inscribed and circumscribed circles for an n sided regular polygon of side a, is [AIEEE 2003]

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