sin600 度等于几?
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sin600度等于几?sin600度等于几?sin600度等于几?=sin(600度-720度)=-根号3/2sin(600)=sin(600-360)=sin(240)=sin(360-120)=-
sin600 度等于几?
sin600 度等于几?
sin600 度等于几?
=sin (600度-720度)=-根号3/2
sin(600)=sin(600-360)=sin(240)=sin(360-120)=-sin120=-1/2
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