The following bearings were observed while traversing with a compass. Calculate the corrected bearing of line CB.
| Line | Fore bearing | Back bearing |
| AB | 45° 45' | 226° 10' |
| BC | 96° 55' | 277° 5' |
| CD | 29° 45' | 209° 10' |
| DE | 324° 48' | 144° 48' |
1
276° 30'
2
276° 40'
3
276° 50'
4
276° 10'
5
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