计算sin4/3π.cos(-5/3π).tan(-45度)

计算sin4/3π.cos(-5/3π).tan(-45度)
计算sin4/3π.cos(-5/3π).tan(-45度)

计算sin4/3π.cos(-5/3π).tan(-45度)
sin(4π/3)=sin(π＋π/3)=－sin(π/3)=－√3/2
cos(－5π/3)=cos(5π/3)=cos(2π－π/3)=cos(π/3)=1/2
tan(－45°)=－tan45°=－1

sin4/3π=根号3
cos(-5/3π)=1/2
tan(-45度)=-1

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-根号3/2，/,1，-1