Find the magnetic bearing of lines From the given True bearing and delicination
(a) Bearing of a line = 72°36′ , Delicination = 1° 44′ W
(b) Bearing of a line = 259°12′, Declination = 0°56’E
Solutions :
(a) Bearing of a line = 72°36′ , Delicination = 1° 44′ W
magnetic bearing of a line = True bearing of line + Declination ( West )
= 72°36′ +1°44′
magnetic bearing = 74°20′
(b) Bearing of a line = 259°12′, Declination = 0°56’E
magnetic bearing of a line = True bearing – Declination (East)
= 259°12′ – 0°56′
magnetic bearing = 258°16′
Note :
Magnetic bearing = True bearing + Declination
[Use + sign when Declination West]
[Use – sign when Declination East]