Предмет: Геометрия, автор: ivtimosh74

Решите подробно фото прикреплено пожалуйста,с объяснениями,а то не понимаю что-то

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Автор ответа: Аноним

Треугольники р/б с углами при вершине 40° и

(180-70*2)=40° у правого тр-ка.

Подобны по 2-м углам, т.к. у левого тр-ка углы при основании =

(180-40):2=70°.

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