Автор - zlpomoprooo

Найдите cos a tg a ctg a
Если cin a 5/4​

Ответ

Автор - elliotaldersson333
Sinx=5/4
Tgx=sinx/cosx
Ctgx=1/tgx
Cos^2+sun^2=1
Cos^2=1-(5/4)^2
Cos^2=-9/16
Cosx=-3/4
Tg=(5/4)/(-3/4)=-5/3
Ctg=-3/5.

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