Предмет: Геометрия, автор: kristafoxmail

Знайдіть кут в трикутника ABC, якщо АС = √39 см, AB = 5 см, ВС=7 см.

Ответы

Автор ответа: orestdemyanov

0

Ответ:

63

Объяснение:

7х+8х+5х=180

х=9

7*9=63

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