The astronomic bearings of two lines are a N 64 deg 29 min E

The astronomic bearings of two lines are a) N 64 deg 29 min E and b) S 40 deg 25 min W Compute their magnetic bearings if the magnetic declination is 5 deg 19 min E a) N b) S deg deg min E min W

Solution

a) astronomic bearing=N 64^o29\' E

magnetic declination=5^o19\'E

magnetic bearing = 64^o29\'-5^o19\'=N59^o10\'E

b)astronomic bearing=S 40^o25\' W

magnetic declination=5^o19\'E

magnetic bearing = 40^o25\'-5^o19\'=S35^o6\'E