Hello Everyone, I'm doing my math in advance so I came across a Trigonometry question I came across in my textbook. I did make some progress but I do not know how to go about it further. 1. The problem statement, all variables and given/known data Prove that, tan3A + tan2A + tanA = tan3Atan2AtanA 3. The attempt at a solution I did simplify tan3A as- tan(2A+A) and then tried going about it. I just need someone to spur me on to the right approach and not provide the answer necessarily.