решите уравнение
tg(x-1)*cosx=0
tg(x-п/2)=1
tgx*cosx=0
sinx/cosx*cosx=sinx
ctgx=1
х=П/4+Пk
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tg(x-1)*cosx=0
tgx*cosx=0
sinx/cosx*cosx=sinx
tg(x-п/2)=1
ctgx=1
х=П/4+Пk