в треугольнике авс угол с равен 90 градусов ab 2 bc корень 3 найдите cosa - №16614820

в треугольнике авс угол с равен 90 градусов ab 2 bc корень 3 найдите cosa
- Предмет:
  Геометрия
- Автор:
  chevym5pk
- 5 лет назад

Ответы 1

по теореме Пифагора найдем АС=\/АВ^2-ВС^2. тогда АС=1см, отсюда cos@=1/2.
- Автор:
  edwards
- 5 лет назад
- 0
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