A four sided closed field traverse has the fol lowing angles A 81 53 30 B 70 28 30 C 86 09 30 D 121 30 30 The lengths of the sides are as follows AB 636 45 ft BC 654 45 ft CD 382 65 ft DA 469 38 ft The bearing of AB is S 17 17 W BC is in the N E quadrant a Balance the field angles b Compute the bearings or the azimuths