**1. The problem statement, all variables and given/known data**

**3. The attempt at a solution**

I understand 90% of the problem and how to do it, I just can’t wrap my head around how they managed to get 0.3sin30 for that one side in the problem.

**1. The problem statement, all variables and given/known data**

**2. Relevant equations**

**3. The attempt at a solution**

http://ift.tt/1gKjssw