Предмет: Алгебра, автор: moldir1695

cos 11 a + cos 9 a+ 3 cos 7 a+ 3 cos 5 a/ cos 8 a

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Автор ответа: taisiyakiricha69

Ответ 8/17 Обьяснение не знаю

папа сказал

taisiyakiricha69: Если не правильно то Прости пж

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