JEE Main 2003Annual, Paper 1MathematicsMediumProperties of Triangle19× since 2002The sum of the radii of inscribed and circumscribed circles for an nnn sided regular polygon of side a,a,a, is :AOption A. a4cot(π2n){a \over 4}\cot \left( {{\pi \over {2n}}} \right)4acot(2nπ)BOption B. acot(πn)a\cot \left( {{\pi \over {n}}} \right)acot(nπ)COption C. a2cot(π2n){a \over 2}\cot \left( {{\pi \over {2n}}} \right)2acot(2nπ)DOption D. acot(π2n)a\cot \left( {{\pi \over {2n}}} \right)acot(2nπ)CheckSkip · show solution
