# 20. Joe is standing on top of Marina Towers looking at the Leo Burnett World Headquarters building across the Chicago River. It is

Question

20. Joe is standing on top of Marina Towers looking at the Leo Burnett World Headquarters building across the Chicago River. It is 880 feet between buildings. Joe finds the angle of elevation to the top of the Burnett building to be 8 degrees and the angle of depression to the ground level to be 20 degrees. How tall is the Burnett building to the nearest foot?​

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1 month 2022-12-24T17:48:15+00:00 1 Answer 0 views 0

1. The height of the Burnett building to the nearest foot be is 444 feet

### What is angle of elevation and depression?

The angle from the horizontal to a point or the line of sight is measured with angles of elevation and depression.
when the points is high above the line of sight we have angle of elevation however when the line of sight is below the horizontal we have angle of depression
Given data
distance between the two buildings ( horizontal ) = 880 feet
angle of elevation = 8 degrees
angle of depression = 20 degrees
applying Trigonometry relations
for angle of elevation
tan 8 = h1 / 880
h1 = 123.676 feet
for angle of depression
tan 20 = h2 / 880
h2 = =880 * tan 20
h2 = 320.294
let the height of the Burnett building to the nearest foot be h
h = h1 + h2
h = 123.676 + 320.294
h = 443.97
h = 444 feet
Read more on angle of elevation and depression here: https://brainly.com/question/15580615
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