sunRiz Sin60*cosx+cos60×sinx-sin60*cosx+cos60*sinx+cos^(2)x-1= 2cos60×sinx-sin^(2)x=2×0.5*sinx-sin^(2)x= sinx(1-sinx)

yarovoe  sin(60°+x)-sin(60°-x)+ cos²x-1
sin(60°+x)-sin(60°-x)=2sin((60°+x-60°+x)/2)·cos((60°+x+60°-x))/2=
2sinx·cos60°=sinx.
sinx+sin²x=sinx(1+sinx)