Apologies for not making the question clear, I forgot to put some bracket in :eek:
And even though you were giving instruction for solving a different problem to the one I thought I asked, you managed to help me!
I moved across the (1+tan(A+B)tanA) and then brought the tan(A+B) to one side...
Okay, so I had a go at getting tan(A+B) on one side but I only ended up going in circles again. Perhaps it would help if I showed you how I got lost.
First I moved 1+tan(A+B)tanA over to get
tan(A+B) - tanA = tanB + tan(A+B)tanAtanB ... This is where I suspect I may be going wrong
Then I...
SOLVED! :)
Homework Statement
The question is as follows;
Prove that (tan(A+B)-tanA)/1+tan(A+B)tanA = tanB
Homework Equations
I'm certain the addition fomulae need to be applied, although I'm not entirely sure how. I genuinely have tried many times!
The Attempt at a Solution...