An aircraft (at Z) is spotted by two observers (at X and Y) who are L = 2000 feet apart. As the airplane passes over the line joining them, each observer takes a sighting of the angle of elevation to the plane, as indicated in the figure. If A = 40°, and B = 20°, how high is the airplane? %3D h B D L

An aircraft (at Z) is spotted by two observers (at X and Y) who are L = 2000 feet apart. As the airplane passes over the line joining them, each observer takes a sighting of the angle of elevation to the plane, as indicated in the figure. If A = 40°, and B = 20°, how high is the airplane? %3D h B D L

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter8: Applications Of Trigonometry

Section8.2: The Law Of Cosines

Problem 48E

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