Предмет: Геометрия, автор: ChetoHZ

В трапеции ABCD углы A и B прямые. Диагональ AC - бисссектриса угла A и равна 3 корень из 2 см. Найдите площадь трапеции, если острый угол CDA равен a.

viktoriamaksimovskih: Как понять равен а? То есть CDA половине угла А?

ChetoHZ: Не, а - это альфа, по словам моей учительницы.

Ответы

Автор ответа: viktoriamaksimovskih

в фото.

вроде должно быть так.

но могу ошибаться.

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