cos(15π/6)+isin(15π/6)=cos(5π/2)+isin(5π/2),5π/2是怎么算出来的,求解
问题描述:
cos(15π/6)+isin(15π/6)=cos(5π/2)+isin(5π/2),5π/2是怎么算出来的,求解
答
15/6 分子分母同除以3,得
5/2