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where M = the mass of Earth; G = the gravitational constant; a = the equatorial radius of Earth; θ = colatitude; and λ = longitude measured from an arbitrary meridian.
They devised a technique for computing these positions (expressed in terms of degrees of latitude and longitude, measured relative to the path of the Sun's apparent annual motion) by successively adding appropriate terms in arithmetic progression.
The position of a point on the surface of the Earth, for example, can be described by degrees of latitude, measured north and south from the Equator, and degrees of longitude, measured east and west from the great circle passing through Greenwich, England, and the poles.
The combined index W is the sum of the normalized series for war and migration frequencies (years with recorded battles or immigrations per 30 years), and Han/nomad administrative border at the 110°E longitude, measured as distance south of the 20°N latitude.
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Longitude measures your distance East or West of the prime meridian, and latitude measure your distance North or South of the equator.
None of them conform to a 33 degree measurement, whether you use latitude or longitude measures of reckoning.
In Houston, Texas a degree of longitude measures a distance of 97 km.
A coordinate system is needed because a degree of latitude consistently measures a distance of 111 km north to south but a degree of longitude measures a distance of 111 km east to west at the equator but 0 km at the north and south poles.
Longitude is measured 180° both east and west of the prime meridian.
…ecliptic system of astronomical coordinates, celestial longitude is measured in degrees east from the vernal equinox along the ecliptic.
Longitude was measured in degrees that increase to the west of this meridian completely around the planet.
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