There are 14 red marbles for every black marble
Angles ACD and ACE are supplementary. They combine to form a straight angle which is 180 degrees. Let x be the measure of angle ACE.
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(angle ACD) + (angle ACE) = 180
100 + x = 180
x = 180-100 .... subtract 100 from both sides
x = 80
<h3>angle ACE is 80 degrees</h3>
The height of the Burnett building to the nearest foot be is 444 feet
<h3 /><h3 /><h3>What is angle of elevation and depression?</h3>
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
<u>Given data</u>
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: brainly.com/question/15580615
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You have to use a proportion.
3.5/18= 1.5/x
3.5x=27
x= 7.7 cm
