из точки к плоскости проведен перпендикуляр 20 см и наклонная 25. Найти проекцию наклонной

из точки к плоскости проведен перпендикуляр 20 см и наклонная 25. Найти проекцию наклонной
- Предмет:
  Математика
- Автор:
  teodora
- 6 лет назад

Ответы 2

Проведя перпендикуляр мы получим прямоугольный треугольник.Проекция которого равна,разнице квадрата наклонной к квадрату перпендикуляра:√25²-20² = 15 (см.) - проекция.Ответ: 15 см
- Автор:
  eduardoburns
- 6 лет назад
- 0
Пусть АВ=25-наклонная, АС=20-перпендикуляр, ВС-проекция наклонной.По теореме Пифагора:ВС²=АВ²-АС²ВС²=25²-20²=625-400=225ВС=15Ответ: 15.
- Автор:
  bonnie76
- 6 лет назад
- 0
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из точки к плоскости проведен перпендикуляр 20 см и наклонная 25. Найти проекцию наклонной

Ответы 2

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