As shown, a space truss is the frame for a building's awning. $($Figure $2)$ Three ball$-$and$-$socket joints at A$,$ B$,$ and E support the frame. If a force of F$=\{110$i$+310$j$\}$ N

is applied at point D$,$ what are the forces in each member? Indicate a tensile force as a positive value and a compressive force as a negative value.

Find the following: FDA,FDC$,$FDB$,$FCA,FCB$,$FCE

i got FDA$=395\mathrm{.}27,$FDC$=-212,09,$FDB$=-140\mathrm{.}44$

not sure if it's correct