According to Lami’s theorem
A
The three forces must be equal
B
The three forces must be at 120° to each other
C
The three forces must be in equilibrium
D
If the three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two
Correct Answer: If the three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two