Find the Azimuth on each line of the polygon 176S S3236 Solu

Solution

Azimuth of a line = (Back azimuth of the preceeding line) + (Interior angle)

Az_2-1 = 309^o30\'

Az_1-2 = 309^o 30\' - 180^o = 129^o 30\'

Az_1-3 = Az_1-2 + (interior angle 2-1-3) = 129^o 30\' + 72^o 28\' 52\'\' = 201^o 58\' 52\'\'

Az_3-1 = 201^o 58\' 52\'\' - 180^o = 21^o 58\' 52\'\'

Az_3-4 = Az_3-1 + (interior angle 1-3-4) = 21^o 58\' 52\'\' + 113^o 15\' 26\'\' = 135^o 14\' 18\'\'

Az_4-3 = 135^o 14\' 18\'\' + 180^o = 315^o 14\' 18\'\'

Az_4-2 = Az_4-3 + (interior angle 3-4-2) = 315^o 14\' 18\'\' + 65^o 40\' 44\'\' = 380^o 55\' 2\'\' - 360^o = 20^o 55\' 2\'\'

Az_2-4 = 20^o 55\' 2\'\' + 180^o = 200^o 55\' 2\'\'

Note:

Back azimuth = Front azimuth + 180^o ; if Front azimuth < 180^o

Back azimuth = Front azimuth - 180^o ; if Front azimuth > 180^o