Hi people..

ok, this question is actually very simple and i did it 5 times but i didn't get the answer as provided.

here is the question..

A is in 3rd quadrant with cos A=-24/25 and B in the 2nd quadrant with cos B=-8/17. Find tan(A+B).

Answer:-304/297<<----- i believe that the answer provided is wrong!

can anybody prove that i'm wrong?

thanks in advance