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John is looking up at the top of the Empire State Building from 1 mi. away and measures the angle of elevation to be 11 degrees. Use this information to find the approximate height of the Empire State Building to the nearest foot.

User Pap
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2 Answers

6 votes
1250 feet hoped i helped

User Ivan Nesterenko
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7 votes

Refer to the attached image.

Let the height of the Empire State Building = BC = 'x'

John is standing at distance from Empire State Building = AB = 1 mile

The angle of elevation = 11°

In triangle ABC,

Consider
\tan 11^(\circ)= (Perpendicular)/(Base)


\tan 11^(\circ)= (BC)/(AB)


\tan 11^(\circ)= (x)/(1)


0.194= (x)/(1)

x = 0.194 mile

Since 1 mile =5280 feet

So, x =
0.194 * 5280

= 1024.32 feet.

So, the height of the Empire State Building is 1024.32 feet.

John is looking up at the top of the Empire State Building from 1 mi. away and measures-example-1
User Alexander Higgins
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