Introduction to Parameters and Objects - Building Java Programs: A Back to Basics Approach - page 187

You must convert these coordinates to radians before you can use them effectively in the formula. After conversion,
the coordinates become
• Nashville:

1 36.12° 0.6304 rad, l 86.67° 1.5127 rad

1

• Los Angeles: 2 33.94° 0.5924 rad, l 118.40° 2.0665 rad

2

Using these values in the angular distance equation, you get

r ¢ s = 6372.795 * 0.45306 = 2887.259 km

Thus, the distance between these cities is about 2887 km, or 1794 miles. (Note: To solve this problem, you will need
to use the Math.acos method, which returns an arccosine angle in radians.)