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salomatkin
@salomatkin
July 2022
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В треугольнике ABC угол C равен 90 градусов BC=15,AB=17.найдите tgA
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evvoronina1
1) По теореме Пифагора:
АВ^2 = АС^2 + ВС^2
АС = √(АВ^2 - ВС^2)
АС = √(17^2 - 15^2) = √(289 - 225) = √64 = 8
2) tgА =ВС/АС
tgА = 15/8 = 1,875
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Answers & Comments
АВ^2 = АС^2 + ВС^2
АС = √(АВ^2 - ВС^2)
АС = √(17^2 - 15^2) = √(289 - 225) = √64 = 8
2) tgА =ВС/АС
tgА = 15/8 = 1,875