8-5 Angles of Elevation and Depression

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Presentation transcript:

8-5 Angles of Elevation and Depression Vocab: Angle of elevation: the angle formed by a horizontal line and an observers line of sight above the horizontal line Angle of depression: the angle formed by a horizontal line and an observers line of sight below the horizontal line

Angle of Elevation Ex 1: The angle of elevation from point A to the top of a cliff is 34°. If point A is 1000 feet from the base of the cliff, how high is the cliff? Ex 2: Find the angle of elevation of the Sun when a 12.5-meter-tall telephone pole casts an 18-meter-long shadow.

Angle of Depression Ex 3: A ski run is 1000 yards long with a vertical drop of 208 yards. Find the angle of depression from the top of the ski run to the bottom. Ex 4: From the top of a 120-foot-high tower, an air traffic controller observes an airplane on the runway at an angle of depression of 19°. How far from the base of the tower is the airplane?

Classwork/Homework p. 583-584 4,5,7, 12, 13, 15