Question 79379
The 24 lines of longitude that approximate the 24 standard time zones are equally spaced around the equator.
a. Suppose you use 24 central angles to divide a circle into 24 equal archs. Express the measure of the angles in radians.
Circumference comprises 2(pi) radians
Each central angle will be [2(pi)]/24= pi/12 radians
-------------

b. The radius of the equator is 3960 mi. About how wide is each time zone at the equator.
Each is [pi/12][3960]= 1036.73 miles
--------------
c. The radius of the Arctic Circle is about 1580 mi. About how wide is each time zone at the artic circle?
Each is [pi/12][1580]=413.64 miles
============
Cheers,
Stan H.
Cheers,
Stan H.