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bogdanovich [222]
3 years ago
8

A person whose eye level is 20 feet above the ground is looking at a building. The angle of elevation to the top of the building

is 31º and the angle of depression to the bottom of the building is 24∘. What is the height (in feet) of the building? Round your answer to the nearest foot.
Mathematics
1 answer:
Inessa [10]3 years ago
8 0
Distance of the person from the building (x)

tan 24 = 20/x => x = 20/tan 24 = 44.92 ft

The height of the building above the height of the person and the distance of the person from the building forms two legs of right angled triangle.

Therefore, if h is the height of the building, then;
tan 31 = (h-20)/44.92
h-20 = 44.92 tan 31
h = (44.92 tan 31) + 20 = 26.99 + 20 = 46.99 ft
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8 0
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Please help!!!!!!!!!!
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We can calculate the slope of line l.

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Substitute:

m=\dfrac{1-7}{2-(-1)}=\dfrac{-6}{3}=-2

<h3>Answer: A) -2.</h3>
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Emily had 75 buttons. She gave 15 to Jake. What percent of buttons did she give to Jake?
eduard

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Step-by-step explanation:

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