Предмет: Геометрия, автор: 10062002

50 баллов скореее помогитее
В треугольнике ABC AB=18см., угол B=30 градусов, угол C=90 градусов. Найдите:1)расстояние от точки A до прямой BC. 2)длину проекции наклонной AB на
прямую AC.
1НЕ НАДО РЕШИЛА.

Ответы

Автор ответа: nastasiya98

Катет лежащий против угла в 30градусов, равен половине гипотенузы, поэтому AC=1/2AB BC и есть проекция, по теореме Пифагора : ВС=корень AB-AC=корень 324-81=корень243

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