问题描述: 若sin(π/6-α)=根号3/3,则,sin(7π/6-α)= 1个回答 分类:综合 2014-09-26 问题解答: 我来补答 sin(7π/6-α)=sin(π+π/6-α)=-sin(π/6-α)=-√3/3 展开全文阅读