由正弦定理,得：a=2RsinA、b=2RsinB,则：a(cosC＋√3sinC)=b2RsinA(cosC＋√3sinC)=2RsinBsinAcosC＋√3sinAsinC=sinB=sin(A＋C)=sinAcosC＋cosAsinC则：√3sinAsinC=cosAsinC因为：sinC≠0,则：√3sinA=cosAtanA=si...