Question
Download Solution PDFMagnetic 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.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Confusion Points First declination is in East so take positive sign and Second declination is in West so take negative sign.
Given:
Magnetic Bearing= 10° 30'
Magnetic Declination= 2° East
True Bearing = Magnetic Bearing ± Magnetic Declination (E/W)
Use the plus sign if the declination is in the East and the minus sign if the declination is in the West.
True Bearing = 10° 30' + 2° = 12° 30'
Change in Magnetic Declination due to Seasonal Variation:
Change in magnetic declination= 2° West
True Bearing = Magnetic Bearing − Magnetic Declination
Magnetic Bearing = 12° 30' + 2°= 14° 30'
Magnetic Bearing = N 14° 30' E
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