CAUTION : these are trilinear equations

K227A :
x y^2 Csc(A/3-B/3+π/6) Csc(A/3-C/3+π/6)-x z^2 Csc(A/3-B/3+π/6) Csc(A/3-C/3+π/6)+x^2 y Csc(A/3-B/3+π/6) Sec(B/3-C/3)-y z^2 Csc(A/3-B/3+π/6) Sec(B/3-C/3)-x^2 z Csc(A/3-C/3+π/6) Sec(B/3-C/3)+y^2 z Csc(A/3-C/3+π/6) Sec(B/3-C/3)=0

K227B :
x^2 y Csc(A/3-B/3-π/6) Csc(B/3-C/3+π/6)-y z^2 Csc(A/3-B/3-π/6) Csc(B/3-C/3+π/6)+x y^2 Csc(A/3-B/3-π/6) Sec(A/3-C/3)-x z^2 Csc(A/3-B/3-π/6) Sec(A/3-C/3)-x^2 z Csc(B/3-C/3+π/6) Sec(A/3-C/3)+y^2 z Csc(B/3-C/3+π/6) Sec(A/3-C/3)=0

K227C :
x^2 z Csc(A/3-C/3-π/6) Csc(B/3-C/3-π/6)-y^2 z Csc(A/3-C/3-π/6) Csc(B/3-C/3-π/6)+x y^2 Csc(A/3-C/3-π/6) Sec(A/3-B/3)-x z^2 Csc(A/3-C/3-π/6) Sec(A/3-B/3)-x^2 y Csc(B/3-C/3-π/6) Sec(A/3-B/3)+y z^2 Csc(B/3-C/3-π/6) Sec(A/3-B/3)=0