Предмет: Геометрия, автор: vikos639

Помогите пожалуйста!!!!!!!!!!!!Дано вектори m (7; 1; -2) i n (-1; 2; -2;). Знайдіть косинус кута між векторами m і n

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Автор ответа: manyny06

1

Ответ:

решение смотри на фотографии

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