If $A>0$, $B>0$ and $A+B=30^\circ$, find the minimum value of $\tan A+\tan B$.
A similar question has been asked here. Many good answers are posted there. I understood that.
One particular answer by @Bill Kleinhans intrigued me as it was short and straightforward. But I didn't fully understand that answer. It uses Jensen's inequality, which I know, but don't know how to use that to get the answer here.
Not posting this as a comment there because Bill has been away close to three years now.