tan(-23π/6)=
问题描述:
tan(-23π/6)=
答
tanx周期是π
原式=tan(-4π+π/6)
=tanπ/6
=√3/3
tan(-23π/6)=
tanx周期是π
原式=tan(-4π+π/6)
=tanπ/6
=√3/3