Предмет: Геометрия, автор: Анна11111111747838

Вот это срочно [email protected]срочно сроноооооооо

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Автор ответа: lorenza

0

№1
угол А= 180-(60+90)=30
ВС-катет, лежащий против угла 30, = половине гипотенузы
значит ВС=ВА:2= 10:2=5

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