2^(sin2x/(cos2x-1))=2^(-sqrt(3)) sin2x/(cos2x-1)=-sqrt(3) cos2x-1=cos^2x-sin^2x-sin^2x-cos^2x=-2sin^2x 2sinxcosx/-2sin^2x=-ctgx -ctgx=-sqrt(3) ctgx=sqrt(3) x=П/6+Пk