Magnetic declination is the angle between:

True meridian and magnetic meridian

Magnetic meridian and a survey line

Declination is east (positive) when:

Magnetic north lies east of true north

Magnetic north lies west of true north

The needle is attracted by iron

2081 Baisakh · 1 mark

Define magnetic declination

Short answer

Magnetic declination is the horizontal angle between the true meridian and the magnetic meridian at a point. It is east (positive) when magnetic north is east of true north, and west (negative) when west. True bearing = magnetic bearing + declination (east +, west –).

Define magnetic declination.

Magnetic declination is the horizontal angle between the true (geographic) meridian and the magnetic meridian at a place. It is east (positive) when the magnetic north lies to the east of true north and west (negative) when it lies to the west. True bearing = magnetic bearing + declination (east $+$ , west $-$ ).

✓ Answer checked by Claude Opus 5.5 (high effort)

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