1) 6sin(pi/12)cos(pi/12) =
2) sin^2(5A)-cos^2(5A) =
3) (2tg2A) / (1-tg^2(2A)) =
4) sin(A/6)cos(A/6) =
5) 20sin^2(4A)cos^2(4A) =
6) sin3Acos3A =
2) sin^2(5A)-cos^2(5A) =
3) (2tg2A) / (1-tg^2(2A)) =
4) sin(A/6)cos(A/6) =
5) 20sin^2(4A)cos^2(4A) =
6) sin3Acos3A =
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