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A and B are two points on earth’s surface and on latitude 400 N. The two points are on the longitude 500W and 1300E respectively. Calculate the distance from A to B along a parallel of latitude in kilometers.
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Aug 13, 2021
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Mathematics Form 1
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anonymous
A and B are two points on earth’s surface and on latitude 400 N. The two points are on the longitude 500W and 1300E respectively. Calculate the distance from A to B along a parallel of latitude in kilometers.
The shortest distance from A to B along a great circle in kilometres (Take π = 22/7 and radius of the earth = 6370km)
scale drawing
direction and bearing
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Aug 13, 2021
by
anonymous
d =
^{ 180}
/
_{360}
x 2 x 6370 x
^{22}
/
_{7}
Cos 40º
=
^{1}
/
_{2}
x
^{22}
/
_{7}
x 2 4879.7
= 15336.2 km
^{100}
/
_{360}
x 2 6370 x 22/7
= 11122.2
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