由√3sinAsinC-cosAsinC-sinC=0 又 sinC不等于0怎么得到sin(A-π/6)=1/2
问题描述:
由√3sinAsinC-cosAsinC-sinC=0 又 sinC不等于0怎么得到sin(A-π/6)=1/2
答
由√3sinAsinC-cosAsinC-sinC=0 又 sinC不等于0怎么得到sin(A-π/6)=1/2