What is the longitude at Greenwich, England?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.2: The Law Of Cosines
Problem 3E
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68. Longitude Longitude is the angular distance (expressed in degrees) East or West
Greenwich, England. Arcs of 1° longitude are 110 km apart at the equator, and
of the prime meridian, which goes from the North Pole to the South Pole through
68. Longitude Longitude is the angular distance (expressed in degrees) East or
Greenwich, England. Arcs of 1° longitude are 110 km apart at the equator, ana
therefore 15° arcs subtend 15(110) km, or 1650 km, at the equator.
North Pole
15° W 15° E
|30이w
Equator
1650km
Prime meridian
South Pole
Because Earth rotates 15° per hr, longitude is found by taking the difference
between time zones multiplied by 15°. For example, if it is 12 noon where we are
(in the United States) and 5 P.M. in Greenwich, we are located at longitude 5(15°),
or 75° W.
(a) What is the longitude at Greenwich, England?
(b) Use time zones to determine the longitude where you live.
Transcribed Image Text:68. Longitude Longitude is the angular distance (expressed in degrees) East or West Greenwich, England. Arcs of 1° longitude are 110 km apart at the equator, and of the prime meridian, which goes from the North Pole to the South Pole through 68. Longitude Longitude is the angular distance (expressed in degrees) East or Greenwich, England. Arcs of 1° longitude are 110 km apart at the equator, ana therefore 15° arcs subtend 15(110) km, or 1650 km, at the equator. North Pole 15° W 15° E |30이w Equator 1650km Prime meridian South Pole Because Earth rotates 15° per hr, longitude is found by taking the difference between time zones multiplied by 15°. For example, if it is 12 noon where we are (in the United States) and 5 P.M. in Greenwich, we are located at longitude 5(15°), or 75° W. (a) What is the longitude at Greenwich, England? (b) Use time zones to determine the longitude where you live.
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