Question: (a) Show that tan x = cot x - 2 cot x. (b) Find the sum of the series 2 2 -1

(a) Show that tan ½ x = cot ½ x - 2 cot x.
(b) Find the sum of the series
(a) Show that tan ½ x = cot ½ x

2" 2" -1

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a From Formula 14a in Appendix D with x y we get tan So Replacingqby x we get 2 c... View full answer

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