1. The problem statement, all variables and given/known data I need to find the area of the square in the following figure: 2. Relevant equations Basic Trig relations. 3. The attempt at a solution I aimed to find the length of BC, but first I had to find the unknowns of the right triangle CDE, which are EC=5m, <DCE=36.86ْ , <DEC=53.13ْ . Then I thought that I can use some trig relation for angles to get <BDC and BCD respectively (since the angles of the square are all 90ْ). And that's where I am stuck. Any help?