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gorina00nastya
@gorina00nastya
July 2022
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sin(3/2pi-2arcctg4/3)
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nafanya2014
Verified answer
По формулам приведения
Замена переменной
arcctg(4/3)=α
ctgα=4/3⇒ tgα=3/4
найти
cos2α
Ответ.
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Answers & Comments
Verified answer
По формулам приведенияЗамена переменной
arcctg(4/3)=α
ctgα=4/3⇒ tgα=3/4
найти
cos2α
Ответ.