sin(2x+pai)=?sin(2x+0.5pai)=?
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sin(2x+pai)=?sin(2x+0.5pai)=?sin(2x+pai)=?sin(2x+0.5pai)=?sin(2x+pai)=?sin(2x+0.5pai)=?sin(2x+pai)=s
sin(2x+pai)=?sin(2x+0.5pai)=?
sin(2x+pai)=?sin(2x+0.5pai)=?
sin(2x+pai)=?sin(2x+0.5pai)=?
sin(2x+pai)=sin2xcosπ+cos2xsinπ=-sin2x
sin(2x+0.5π)=sin2xcos0.5π+cos2xsin0.5π=cos2x
sin(2x + π) = -sin(2x)
sin(2x + 0.5π) = cos(2x)
sin(2x+pai)=sin2xcosπ+cos2xsinπ=-sin2x
sin(2x+0.5π)=sin2xcos0.5π+cos2xsin0.5π=cos2x
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sin(2x+pai)=?sin(2x+0.5pai)=?
sin(2x+pai)=?sin(2x+0.5pai)=?
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