“I love waking up in the morning not knowing where I'm gonna go or who I'm gonna meet. Just the other night I was sleeping under a bridge, and now here I am, on the grandest ship in the world, having champagne with you fine people.”

8.5: Angles of Elevation and Depression

Angle of Elevation

Angle of Elevation: the angle to which an observer would have to raise their line of sight above a horizontal line to see an object

Angle of Elevation

Angle of Depression: the angle that an observer would have to lower their line of sight below a horizontal line to see an object

Angle of Elevation

Identify the angle of elevation and the angle of depression.

What can be concluded about the angle of elevation and the angle of depression? Why?

Angle of Elevation and Depression

Find the value of x. Round the nearest tenth of a unit

47°

13

x

Find the value of x. Round the nearest tenth of a unit

16°

27x

Angle of ElevationDescribe each angle as it relates to the situation below

Angle of Depression

An airplane is flying 3500 ft above the ground and begins a 2°descent to land at an airport. How many miles from the airport is the airplane when it starts its descent?

3500

ft

2°

x

2°

Angle of Elevation

A surveyor stands 200ft from a building to measure its height with a 5ft tall theodolite. The angle of elevation to the top of the building is 35°. How tall is the building.

Angles of elevation and depressionA campsite is 9.41 miles from a point directly below the mountain top. If the angle of elevation is 12°from the camp to the top of the mountain, how high is the mountain?

“Death does not wait for you to be ready! Death is not considerate, or fair! And make no mistake: here, you face

Death.”

Section 8.5: #1-14,18-22 even, 28