Magnetic bearing of a line is 10 ̊30’ and the magnetic declination is 2 ̊East. If, due to seasonal
variations, the magnetic declination changes to 2 ̊ West, find the magnetic bearing of the line in quadrantal bearing system.

Correct option is B

Given , Magnetic bearing = 10 ̊30’
magnetic declination = 2 ̊East
We know that,
True bearing = magnetic bearing ± magnetic
Note:- Use plus sign, if declination is in the east and minus sign, if declination is in the west.
True bearing = 10 ̊ 30’ + 2 ̊ = 12 ̊ 30’ Change in magnetic declination due to seasonal variation = 2 ̊
True bearing = magnetic bearing - magnetic declination
Magnetic bearing = 12 ̊ 30’ + 2 ̊
= 14 ̊ 30’
= N 14 ̊ 30’ E