A and B are two points located on each bank of a river and near the abutments of a proposed bridge, to determine its distance a base line CD 180.0 m long is established on the opposite bank of the river and the transit is set-up at stations C and D. The azimuth were taken as follows (40 pts)
Line
C-D
21000
C-A
26000
C-B
29000
D-A
30100
D-B
31500
Compute the length of AB.
Requirements:

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