The bearing of lines OA, OB, OC, and OD are 45°15′, 123°30′,216’45’, and 320°00′ respectively. and the included angles∠AOB ,∠BOC,∠COD and ∠DOA

The bearing of lines OA, OB, OC, and OD are 45°15′, 123°30′,216’45’, and 320°00′ respectively. and the included angles∠AOB ,∠BOC,∠COD and ∠DOA solution: ∠AOB= Bearing OB – bearing OA = 123°30′ – 45°15′ = 78°15′ ∠ BOC = Bearing of OC – Bearing of OB = 216°45′ – 123°30′ = 93°15′ ∠ COD = Bearing … Read more