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Вопрос по математике:
в треугольнике ABC угол С равен 90° ВС 17корень 3, АВ 34 найдите sin B-
Автор:
salty94
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сначала найдем катит АС по теореме Пифагора:
34^2=(17√3)^2+АС^2
1156-867=АС^2
АС^2=289
АС=17
Далее находим синус угла В по формуле :
sinB=AC/AB
sinB=17/34=1/2=0,5
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