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Match the formula to the correct title:

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Departure
Earth Convergence
Conversion Angle

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1/2 EC
= ChLong x Sin(Mean Lat)
= ChLong (mins) x Cos(Lat)

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The Maximum:

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Maximum Deviation = (degrees)

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Maximum Variation = (degrees)

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Match the definitions:

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Isogonal
Agonic Line
Aclinic Line
Variation
Deviation

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Line of zero dip
Line of equal variation
Difference between compass and magnetic
Difference between true and magnetic North
Line of zero variation

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The Diameter of the Earth =

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Explanation

Diameter = 12730km

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km

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Conversions:

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1 Nautical Mile is equal to:

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feet

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Km

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m

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Sm

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The maximum difference between Geodetic and Geocentric latitude is:

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minutes. It is found at

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degrees N/S of the equator.

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Conversions:

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1 cm =

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inches

1Km =

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feet

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Match the latitude to the definition:

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Geodetic Latitude is:
Geocentric Latitude is:
Geographic Latitude is:

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The same as Geodetic Latitude
The angle between the plane of the Equator and a line from that plane which is perpendicular (90°) to a point on the surface.
The angle between the plane of the Equator and a line from the centre of the earth to a point on the surface.

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What is the circumfrence of the Earth?

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12,730 km

21,600 km

40,003 km

40,003 nm

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The departure formula:

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West

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Best

and

Variation

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Magnetic

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