sin4/3π等于多少?
问题描述：
sin4/3π等于多少?
答
sin4π/3
= sin(π + π/3)
= -sin(π/3)
= -√3/2
答
原式=sin(π+π/3)
=sin(π/3)
=√3/2
答
原式=sin(π+π/3)
=-sin(π/3)
=-√3/2