For the truss shown in Figure (supports A & E are hinge type, angle BCD = 30 degrees) the forces in members BD and CD are respectively (in KN units).
1
20 (ten.) ; Zero
2
10 (ten.) ; \(10\sqrt{3}\) (comp)
3
Zero ; 5 (comp.)
4
Zero ; \(10\sqrt{3}\) (comp.)