1. The problem statement, all variables and given/known data
See Figure
2. Relevant equations
3. The attempt at a solution
See Figure
I'm fairly certain the force I drew at point D isn't at a 90 degree angle, but if its not I can't find the perpendicular distance for the horizontal/vertical distances at the point D.
This has been giving me a really big headache and alot of stress lately so some help would be greatly appreciated!