The sum of the radii of inscribed and circumscribed circles for an n sided regular…
Mathematics · JEE Main · NTA Exams — Trigonometry
The sum of the radii of inscribed and circumscribed circles for an n sided regular polygon of side a, is
- \(\operatorname{acot}\left(\frac{\pi}{n}\right)\)
- \(\frac{\mathrm{a}}{2} \cot \left(\frac{\pi}{2 \mathrm{n}}\right)\)
- \(\operatorname{acot}\left(\frac{\pi}{2 n}\right)\)
- \(\frac{\mathrm{a}}{4} \cot \left(\frac{\pi}{2 \mathrm{n}}\right)\)
Answer
(B) a 2 ( 2 n )
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