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Автор - Dima Opaopa

BD-висота трикутника ABC, що поділяє сторону трикутника AB на відрізки AB і DC . Знайти довжину сторони AC, якщо AB=18 см. кутA=60* кут CBD=45*

Ответ

Автор - znanija

кут АВD=30 (90-60=30) = >

=>AС = 1/2 AB = 9cm


Ответ

Автор - Hekady

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АВD=30 (90-60=30) = > AС = 1/2 AB = 9 см .

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