Докажите равности Sin(2 arctg 1/2)+tg (1/2 arcsin 15/17)=7/5

Question

Докажите равности Sin(2 arctg 1/2)+tg (1/2 arcsin 15/17)=7/5

Answer 1

Решение прикреплено✔✔✔✔✔✔✔✔✔✔

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