Предмет: Геометрия, автор: y4enik95

В треугольнике ABC AB=10 см,высота BD=8 см,DC=15 см.Найти стороны треугольника ABC,отношение Sabd:Sabc

Ответы

Автор ответа: MRSG

0

Можна по теоремі піфагора

Розглянемо трикутник ВDС

ВС=√(ВD²+DC²)=√(64+225)=√161=(приблизно)12,7(см)

Розглянемо трикутник АВD

AD=√(10²-8²)=√(100-64)=√36=6(см)

АС=15+6=21(см)

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