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The observed magnetic bearing of a line OE was found to be 185°. It was later discovered that station O had a local attraction of + 1.5°. The true bearing of the line OE, considering a magnetic declination of 3.5° E shall be
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- 180°
- 187°
- 190°
- 193°
- 180°
Correct Option: B
Corrected magnetic bearing = measured value – Local attraction
= 185 – 1.5 = 183.5°
True bearing = magnetic bearing + magnetic declination
= 183.5 + 3.5 = 187°
