Предмет: Геометрия, автор: Grek228

В равнобедренном треугольнике ABC, в котором AC=BC и угол ACB=62 градуса, найдите градусную меру острого угла, который образован прямыми, содержащими биссектрису угла CAB и медиану, проведенную к стороне AB

Нужно решение и желательно чертёж)))

Ответы

Автор ответа: Аноним
3
Найдем углы А и В (они равны, треугольник равнобедренный)
(180-62)/2=59 градусов
Угол А делится пополам по условию (биссектриса угла А).
Значит 59/2=29,5 градусов.
Угол В делится пополам 62/2=31 градус. (В равнобедренном треугольнике медиана проведенная к основанию является одновременно биссектрисой и высотой).
Найдем угол АОС
180-(29,5+31)=119,5 градусов.
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