Plane Trigonometry for Colleges And Secondary Schools
Plane Trigonometry for Colleges And Secondary Schools
Daniel a Daniel Alexander Murray
The book Plane Trigonometry for Colleges And Secondary Schools was written by author Daniel a Daniel Alexander Murray Here you can read free online of Plane Trigonometry for Colleges And Secondary Schools book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Plane Trigonometry for Colleges And Secondary Schools a good or bad book?
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Find the lengths of the sides and apo- thems of the inscribed regular triangle, quadrilateral, pentagon, hexagon, heptagon, and octagon. Compare the area of the circle and the areas of these regular polygons ; also compare the perimeters of the polygons and the circumference of the circle. 5. For the same circle as in Ex. 4, find the lengths of the sides of the circumscribing regular figures named in Ex. 4. Compare their areas and perimeters with the area and circumference of the circle. 6. If ...a be the side of a regular polygon of n sides, show that J?, the 180® radius of the circumscribing circle, is equal to ^ a cosec ; and that r, the 180® ** radius of the circle inscribed, is equal to } a cot -^. n 7. If r be the radius of a circle, show that the side of the regular inscribed 180® polygon of n sides is 2 r sin :!-— ; and that the side of the regular circum- 180® ^ scribing polygon is 2 r tan , n 8. If a be the side of a regular polygon of n sides, B the radius of the cir- cumscribing circle, and r the radius of the circle inscribed, show that area of polygon = i na^ cot i?5!
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