Предмет: Алгебра, автор: cvtmvtqwe

Упростите выражение: cos(-2α) + (2sin(π-2α) / (ctg+ctg(π/2+α) Найдите его значение при а=П/8

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Автор ответа: anisingrigorij

надеюсь это ответ правельный

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