Предмет: Алгебра, автор: Igor171717

Объясните, пожалуйста, как эти скобки составили в тригонометрическом уравнении и вообще зачем они нужны, последняя строчка перед скобками - это разве не окончательное решение?

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Ответы

Автор ответа: irinan2014
0
Это два варианта ответа.
Приложения:
Автор ответа: Igor171717
0
А как Вы считали что в скобках
Автор ответа: Igor171717
0
а с косинусами также работаем?
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