Compute the back bearings for the following reduced bearings.(a) S 79° 04′ E(b)N 88°12’W (C) N 28° 12′ E (d) S 4° 12′ W
SOLUTIONS :
(a) The fore bearing = S 79’04 ‘E.
back bearing of= N 79° 04’N. ( It is a opposite direction remaining value is same )
(b) The fore bearing of = N88°12’W
Back bearing= S 88°12’E( It is a opposite direction remaining value is same )
(c) The Fore bearing = N28°12′ E
Back bearing = S28° 12′ W ( It is a opposite direction remaining value is same )
(d) The Fore bearing = S 4° 12′ W
Back bearing = N 4° 12’ E
Note :
In the QB System the FB and BB are numerically equal but the quadrant are just opposite