y=sin(2x+派/3)会等于y=sin(2x-派/6)?或y=cos(2x-派/6)?
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y=sin(2x+派/3)会等于y=sin(2x-派/6)?或y=cos(2x-派/6)?
y=sin(2x+派/3)会等于y=sin(2x-派/6)?或y=cos(2x-派/6)?
y=sin(2x+派/3)会等于y=sin(2x-派/6)?或y=cos(2x-派/6)?
y=sin(2x+π/3)
=sin[π/2+(2x-π/6)]
=cos(2x-π/6)