Предмет: Геометрия, автор: Kritik971

Решите задачу, быстрее!

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Автор ответа: vpvrest

0

Обозначим точку пересечения хорды и перпендикуляра к ней Д
Рассмотрим треугольник АОД о н прямоугольный и нам известны длина ОА равная радиусу=85 и АД равная половине АВ- 80/2=40
теперь по т Пифагора найдем ОД =√(АО²-АД²)=√(85²-40²)=√(7225-1600)=√5625 =75
ОД=75
Расстояние от хорды до касательной равно 85+75=160

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