为啥sin(-x+m-π/3)=sin(x+m-π/3) -x+m-π/3=2kπ+x+m-π/3,-x+m-π/3=2kπ+π-(x+m-π/3)

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• 为啥sin(-x+m-π/3)=sin(x+m-π/3) -x+m-π/3=2kπ+x+m-π/3,-x+m-π/3=2kπ+π-(x+m-π/3)
• -2sin(-x+m-π/3)=-2sin(x+m-π/3) sin(-x+m-π/3)=sin(x+m-π/3) 所以-x+m-π/3=2kπ+x+m-π/3或-x+m-π/
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• 为啥sin(-x+m-π/3)=sin(x+m-π/3) -x+m-π/3=2kπ+x+m-π/3,-x+m-π/3=2kπ+π-(x+m-π/3)
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