Предмет: Геометрия, автор: Заяц463689

В треугольнике ABC известно, что угол С= 90*, угол А=30*, отрезок BM- биссектриса треугольника. найдите катет AC, если BM= 6 см.

Ответы

Автор ответа: Vladlive
0
<MBC=60°÷2=30°⇒MC=3см
tg<B=AC÷CB
tg<MBC=tg30°=MC÷CB=3÷CB⇒CB=3÷tg30°
АС=tg<B*CB
AC=9см
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