Answer Happy

Unless stated otherwise, all references to bearings in these questions are to Whole Circle Bearings from Grid North. 1. From control point B the bearing of church spire A is 120° 05' 40" The horizontal clockwise angle observed at B between A and a second control point C is 85° 31' 20" What is the bearing of control point C from B? 2. As part of a control scheme, observations have been made to station G from two other stations F and H. The bearing of G from F is 176° 21′ 45" and G from H is 332° 41' 07". What is the horizontal clockwise angle at G between F and H? 3. At the start of a mapping project, it is known that the bearing from a distant reference object RO1 to the first station A is 144° 03′ 27" If the horizontal clockwise angle observed at the first station A from RO1 to a second station B is 103° 52' 09", what is the bearing of station B from station A?