если условие 6/(5tgx+5ctgx), то
6/(5tgx+5ctgx)=6/(5*((sinx/cosx)+(cosx/sinx))=
6cosx*sinx/(5(sinx²+cosx²))=(3sin2x)/5
если (6/5tgx)+5ctgx, то (6/5tgx)+5ctgx=(6/5)ctgx+5ctgx=(ctgx)(31/5)=
31 (cosx/5sinx)
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если условие 6/(5tgx+5ctgx), то
6/(5tgx+5ctgx)=6/(5*((sinx/cosx)+(cosx/sinx))=
6cosx*sinx/(5(sinx²+cosx²))=(3sin2x)/5
если (6/5tgx)+5ctgx, то (6/5tgx)+5ctgx=(6/5)ctgx+5ctgx=(ctgx)(31/5)=
31 (cosx/5sinx)