A packaged boiler is to be unloaded from a flat car. The bed of the flat car is 2 m above the ground. What length of skids is necessary if the skids are to make an angle of 25 degrees with the ground?
A. 2.21 m
B. 3.12 m
C. 4.29 m
D. 4.73 m
E. 5.73 m.
Answer: D