1. The problem statement, all variables and given/known data Hi all its me again.need help again =] well basically i am stuck at b part (iii), no idea on how to find out theta 3 =/ 2. Relevant equations hmm 180- something =/? no idea 3. The attempt at a solution well i though at first that it would be this way: 180=90+19.47 =/ but.. on the mark scheme the answer is way low/ Thanks.