1. Angle of Elevation and Angle of Depression
EQ: When is trig used in the ‘real world’?

2. Warm-up
Use Trig to solve for x.

3. Angle of elevation

4. Angle of Depression

6. Examples
2) A security camera is mounted on a wall 7.4 feet above the ground. It is used to view a door that is 9.3ft away from the wall. Find the angle of depression from the camera lens to the door.
1) When a jet is at 3000ft, the navigator finds that the angle of depression from the plane to the base of the radio tower is 20º. How many feet away from the radio tower is the jet?

7. Examples
4) A group of skateboarders want to build a ramp with an incline of 14º. If the wood to make the ramp is 10ft, what will the rise of the ramp be?
3) A 6-ft man stands 12 ft from the base of a tree. The angle of elevation from his eyes to the top of the tree is 76º. About how tall is the tree?

8. A building is of unknown height
A building is of unknown height. At a distance of 100 feet away from the building, an observer notices that the angle of elevation to the top of the building is 41º and that the angle of elevation to a poster on the side of the building is 21º. How far is the poster from the roof of the building?

9. Sample Question

10. Sample Question