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Автор - misaki81

найдите площадь треугольника изображённого на рисунке​

Ответ

Проверено экспертом

Автор - ТатМих

S = 1/2 ab*sinα

площадь тр-ка равна половине произведения его сторон на синус угла между ними

S=1/2 *6*3*sin30=9*sin30=9*0.5=4.5

Ответ: 4.5

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