数学题提问

sin(α+β)/sin(α-β)=(1/2)/(1/3)
(sinαcosβ+cosαsinβ)/(sinαcosβ-cosαsinβ)=3/2
(tanα/tanβ +1)/(tanα/tanαβ -1)=3/2
tanα/tanβ=5
log5(tanα/tanβ)=log5(5)