Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 3 - Radian Measure and the Unit Circle - Section 3.2 Applications of Radian Measure - 3.2 Exercises - Page 108: 70

Answer

One nautical mile is 1.1 statute miles.

Work Step by Step

We can convert the angle to radians: $\theta = 01' = (\frac{1}{60})^{\circ}(\frac{\pi~rad}{180^{\circ}}) = 0.00029~rad$ The can find the arc length $S$: $S = \theta ~r$ $S = (0.00029~rad)(3963~mi)$ $S = 1.1~mi$ One nautical mile is 1.1 statute miles.
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