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exodor
@exodor
July 2022
1
5
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Найти сторону BC треугольника ABC,если AB=4,cosC=3/5,<A=30°.Помогите пожалуйста.
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AlenaBlack
TgA=CB:4
√3
:3=СВ:4 ⇒ СВ=4*√3:3
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exodor
Ответ должен получится 2,5
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Answers & Comments
√3:3=СВ:4 ⇒ СВ=4*√3:3