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Консультация № 195213
11.04.2019, 06:48
0.00 руб.
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Здравствуйте! У меня возникли сложности с таким вопросом:
Помогите пожалуйста доказать тождество.
Помогите пожалуйста доказать тождество.
Прикрепленные файлы:
Обсуждение
11.04.2019, 17:20
общий
это ответ
Здравствуйте, pelageya.romanyuk2002!
Воспользуемся основным тригонометрическим тождеством и формулами для синуса и косинуса двойного аргумента:
Тогда получим
Воспользуемся основным тригонометрическим тождеством и формулами для синуса и косинуса двойного аргумента:
Тогда получим
Об авторе:
Facta loquuntur.
Facta loquuntur.
Форма ответа
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