化简函数y=cos^2(x+7π/12)-cos^2(x+π/12),
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化简函数y=cos^2(x+7π/12)-cos^2(x+π/12),化简函数y=cos^2(x+7π/12)-cos^2(x+π/12),化简函数y=cos^2(x+7π/12)-cos^2(x+π
化简函数y=cos^2(x+7π/12)-cos^2(x+π/12),
化简函数y=cos^2(x+7π/12)-cos^2(x+π/12),
化简函数y=cos^2(x+7π/12)-cos^2(x+π/12),
y=cos^2(x+7π/12)-cos^2(x+π/12)=sin²(x+π/12)-cos²(x+π/12)=-cos2(x+π/12)=-cos(2x+π/6)
化简函数y=cos^2(x+7π/12)-cos^2(x+π/12),
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