已知tan(a-π/3)=-√3/5,则tana=
问题描述:
已知tan(a-π/3)=-√3/5,则tana=
答
tan(a-π/3)=-√3/5,则
tana=tan[(a-π/3)+π/3]=(-√3/5+√3)/(1-(-√3/5)*√3)=√3/2