Предмет: Геометрия, автор: Аноним

Помогите решить эту задачу по геометрии, заранее благодарю!!!

Приложения:

BacuJIek: ))))

BacuJIek: только не СВ, а СА

BacuJIek: последняя это теорема косинусов

BacuJIek: да всё верно, отвечаю

BacuJIek: ага))) я забыл, что косинус 120 1/2, каеф

BacuJIek: -1/2*

Ответы

Автор ответа: anna2501v

1

Ответ и решение на фото

Приложения:

simovskaya: здравствуйте,не могли бы вы решить подобную задачу?Вот ссылка https://znanija.com/task/28519853 .Заранее благодарю

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