Sinx cosx+2sin2x=cos2x
1/2(2sinx*cosx)+2sin2x=cos2x 1/2sin2x+2sin2x=cos2x 3/2sin2x=cos2x 1.5sin2x/cos2x=1 1.5tg2x=1 tg2x=2/3 2x=arctg2/3 x=