8.4 - Angle of Elevation

8.4 - Angle of Elevation

By Steve Dull

Objective

To use angle of elevation and angle of depression to solve problems.

Thinking about our bellringer

Imagine Mr. Stadel looking up to the top of the lamppost. If we knew how far away he was from the post, and the angle from horizontal (eye-level) to the top of the post, could we figure it out?

Vocabulary

Let's walk through this

​45

19'3"

​ x

Open Ended

How far is Casey standing from the lighthouse?

Vocabulary

Hint:

When you draw your picture, remember that the angle of depression is congruent to the angle of elevation (so as if the object being sighted was looking up).

Some text here about the topic of discussion

Open Ended

What is the altitude of the helicopter?

Time for independent practice