In Problem 7.6, convert the azimuths from north to bearings, and compute the angles, smaller than 180° between successive azimuths.

7.6 43°00'36", 141°25'34", 230°12'20", and 330035148"

Convert the bearings in Problem 7.8 to azimuths from north and compute the angle, smaller than 180°, between successive bearings.

7.8 N44°50 '38"E, S38°42 '54"E, S45°06 '02'W, and N13°24"30"W

Course AB of a five-sided traverse runs due north. From the given balanced interior angles to the right, compute and tabulate the bearings and azimuths from north for each of the traverses in Problem 7.15

7.15 A = 82°13'15", B = 106°35'18", C = 28°45'06", D = 205°14'56", E = 117°11'25"

What magnetic bearing is needed to retrace a line for the conditions stated in the problem 7.33 below?

7.33

1875 Magnetic Bearing 1875 Declination Present Declination

N32°45'E 8°12’W 2°30’E

In Problems 7.37 calculate the magnetic declination in 1870 based on the following data from an old survey record.

1870 Magnetic Bearing Present Magnetic Bearing Present Magnetic Declination

S40°40’W S54°35’W 8°30’E

**Subject Engineering Civil Engineering**