1. 9-3 Angles of Elevation and Depression Learning Target: I can solve problems using angles of elevation and depression

2. Angle of elevation Angle of Depression Horizontal Line 38 An angle of elevation starts at the horizontal line and goes up. An angle of depression starts at the horizontal line and goes down.

3. 2714 ft Angle of depression 3 Sam is flying an airplane. He must being a 3 degree descent starting from an altitude of 2714 feet. How many miles from the runway is the airplane at the start of this approach? sin 3 0 = 2714/x x*sin 3 0 = 2714 x = 2714/sin 3 0 x =51,857.3 feet

4. Ex. Trever looks out from the crown of the Statue of Liberty (sometime in March) approximately 250 feet above ground. He sights a ship coming into New York Harbor and measure the angle of depression as 18 degrees. Find the distance from the base of the statue to the ship to the nearest foot. 18 0 250 feet x tan 18 0 = 250/x x tan 18 0 = 250 x=250/tan 18 x=769 feet