В равнобедренном треугольнике ABC, BE - высота, AB=BC. Найдите BE, если AC=√7,48 и AB=1,4 - Дата: 08.07.2019, Автор: koch

В равнобедренном треугольнике ABC,
BE - высота, AB=BC.
Найдите BE, если AC=√7,48 и AB=1,4
- Предмет:
  Математика
- Автор:
  koch
- 5 лет назад

Ответы 2

Ответ:
0,3
Пошаговое объяснение:
Высота в равнобедренном - это и медиана
Значит АЕ= (√7,48/2)
Рассмотрим прямоугольный треугольник АВЕ:
АВ - гипотенуза, значит АВ^2=BE^2+AE^2
1,96=BE^2+1,87
BE^2=0,09
BE=0,3
- Автор:
  hays
- 5 лет назад
- 0
Ответ: 0,3
Пошаговое объяснение:
в равнобедр-м тр-ке высота явл. и медианой, тогда АЕ=1/2АС= 1/2V7,48=
1/2*2V1,87=V1,87 из тр-ка АВЕ найдем ВЕ, ВЕ^2=AB^2-AE^2=1,96-1,87=0,09, BE=0,3
- Автор:
  félixspencer
- 5 лет назад
- 0
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В равнобедренном треугольнике ABC, BE - высота, AB=BC. Найдите BE, если AC=√7,48 и AB=1,4

Ответы 2

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В равнобедренном треугольнике ABC,
BE - высота, AB=BC.
Найдите BE, если AC=√7,48 и AB=1,4