tan3分之11派=tan(4π-π/3)=-tan(π/3)=-√3；
sin3分之17派=sin(6π-π/3)=-sin(π/3)=-√3/2
cos(-6分之7派)=cos(7π/6)=cos(π+π/6)=-cos(π/6)=-√3/2
tan(-4分之7派)=tan(-2π+π/4)=tan(π/4)=1
sin900°=sin(720°+180°)=sin180°=0
求下列各三角函數(shù)值
求下列各三角函數(shù)值
tan3分之11派,sin3分之17派,cos(-6分之7派),tan(-4分之7派),sin900℃,
tan3分之11派,sin3分之17派,cos(-6分之7派),tan(-4分之7派),sin900℃,
數(shù)學(xué)人氣：915 ℃時(shí)間：2020-06-18 17:53:48
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