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Magnetic variation…
  • A
    has a maximum value of 180°.
  • B
    must have a value of 0° at the magnetic Equator.
  • C
    cannot exceed 90°.
  • D
    varies between a maximum of 45° East and 45° West.
The difference between true north and magnetic north is called magnetic declination or magnetic variation.
  • The minimum Magnetic Variation is 0 degrees => along the Agonic Line or line of zero variation; and
  • The maximum Magnetic Variation is 180 degrees => along a line between the Magnetic North Pole and the Geographic North Pole

In the Arctic, the magnetic variation is largely a result of distance. For example, a compass positioned between the magnetic and the geographical North Pole will point due south, towards the magnetic pole and away from the geographical pole, amounting to a magnetic declination of around 180°.

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