[Just for fun] Let A, B and C be the three angles of an acute triangle, find the minimum value of tanA tan B tan C. (要step呀😛） Tags: 8 comments 3 likes 0 shares Share this: 史丹福狂想曲 About author not provided 5816 followers 5189 likes "http://drstanford.blogspot.hk/" View all posts