Найти tg, если sin=1/корень из 10. Created by 2400. algebra-ru

корень из 10...

enotkin777

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Вот решил. А текст пишу чтоб набрать 20 символов для отправки сообщения.

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Amaimoon

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$tg= \frac{sin \alpha }{cos \alpha }\\cos \alpha = \sqrt{1-sin^{2} \alpha }\\cos \alpha = \sqrt{1- \frac{1}{10} }\\cos \alpha = \frac{3}{ \sqrt{10} }\\tg \alpha = \frac{1}{ \sqrt{10} } * \frac{ \sqrt{10} }{3} \\tg \alpha = \frac{1}{3}$

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