sin3分之4π等于多少,
问题描述:
sin3分之4π等于多少,
答
sin3分之4π=-sin3分之π=-2分之根号3
答
sin3分之4π
=-sin1/3π
=-√3/2
答
sin(π+π/3)=-=-sin(π/3) =-√3/2
答
sin(4π/3)=sin(π+π/3)= - sin(π/3)= - √3/2
希望对你有帮助~~
答
sin4π/3=sin(π+π/3)
=-sin(π/3) (4π/3=π+π/3是第三象限角)
=-√3/2