1,Sin 2x - √3 cos 2x +1 / sin(x+π/4) = 4sin 3x2, 2cos(π/3 -2x) +(4+√3) cos x + 3sin x + 2√3 -1=03, √3 sin2x - cos 2x - 4sin x + cos x / cosx - 1 = 14, ( sinx + cosx)^2 + 2 sin^2 x/2 = sin x(2√3 sinx + 4-√3)
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