Помогите решить:
1) 2sin6x*cos2x=sin8x+1
2) 4sinxcos(pi/2+5x)=1-cos4x
3) sin7x+cos^2 2x=sin^2 2x+sinx
1) 2sin6x*cos2x=sin8x+1
2) 4sinxcos(pi/2+5x)=1-cos4x
3) sin7x+cos^2 2x=sin^2 2x+sinx
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