1. Finding the Height of an Airplane. An aircraft is spotted by two observers who are 1000 feet apart. As the airplane passes over the line joining them, each This module is a property of Technological University of the Philippines Visayas intended for EDUCATIONAL PURPOSES ONLY and is NOT FOR SALE NOR FOR REPRODUCTION. 91 observer takes a sighting of the angle of elevation to the plane, as indicated in the figure. How high is the airplane?

The head angle on a motorcycle is the angle between the horizontal in the slant line to the steering head. The distance along the ground between the lines for the steering head and the vertical lines the center of the wheel is a trail. See the accompanying figure. The radius of the wheel is 14.3 inches and the head angle is 63°. Find a trail.

Alice is flying a drone. The angle of depression from the drone to Alice is 35 degrees. The direct distance from Alice to the drone is 22.2 meters. What is the altitude of the drone? * 15.5 m 18.9 m 38.7 m O 12.7 m