Determine the magnitude (in N) of the vertical
component of the reaction at point A, B, C, and D
if, F=278N, a=0.54m, b=2.05m, r=1.36m and d=
34.69degrees. Do not round off in any
intermediate steps. Express final answer in 5
Significant figures. Instead of units, indicate U if
force is upward or D if downward