From a point 300 feet above level ground in a firetower, a ranger spots two fires in
Question:
From a point 300 feet above level ground in a firetower, a ranger spots two fires in the Yeti National Forest. The angle of depression made by the line of sight from the ranger to the first fire is 2.5◦ and the angle of depression made by line of sight from the ranger to the second fire is 1.3◦. The angle formed by the two lines of sight is 117◦. Find the distance between the two fires. Round your answer to the nearest foot. (Hint: In order to use the 117◦ angle between the lines of sight, you will first need to use right angle Trigonometry to find the lengths of the lines of sight. This will give you a Side-Angle-Side case in which to apply the Law of Cosines.)
Fundamentals of Thermodynamics
ISBN: 978-0471152323
6th edition
Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen