Предмет: Алгебра, автор: soelmabalzh

решите уравнение корень 3sin x-cosx=0

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Автор ответа: KST

3sinx - cosx = 0 поделим обе части на cosx, при этом cosx не должно равняться 0 3sinxcosx - cosxcosx = 0 sinxcosx = tgx 3tgx - 1 = 0 3tgx = 1 tgx = 13 x = arctg 13 + пи * n

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