Multiple choice

The magnetic bearing of a line AB is S 45o E and the declination is 5o West. The true bearing of the line AB is

  1. S 45o E

  2. S 40o E

  3. S 50o E

  4. S 50o W
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Magnetic bearing is S 45 E. Declination is 5 degrees West, meaning the magnetic north is 5 degrees west of true north. To convert magnetic bearing to true bearing, subtract the westerly declination from the bearing angle relative to the north-south line. S 45 E becomes S (45 + 5) E = S 50 E.

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