Предмет: Алгебра, автор: strutsbkru

Дано: ∆ АВС, ВС =7 √2 см, < В=75°, <С=60°. Зайти: АВ.
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Ответы

Автор ответа: IrkaShevko

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∠A = 180° - 75° - 60° = 45°
по т. синусов:
BC/sinA = AB/sinC

AB = BCsinC/sinA = 7√2*(√3/2)/(√2/2) = 7√3 см

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