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Mathematics

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The angle of elevation to the top of a 30 story skyscraper is measured to be 3 degrees from a point on the ground 2,000 feet from the building.What is the height of the skyscraper to the nearest hundreth foot?

Answer :

Аноним Аноним

Today at 12:29 AM

You have an angle of elevation of 3 degrees and you're 2000 ft from base of 30 story building.
Draw a picture of this. Then tan(3) = ht of bldg/2000
I get a height of 104.82 ft rounded to 2 dp.

5. Ok. use the Pythagorean Theorem here to find the hypotenuse of the right triangle
hypt = sqrt(50^2 + 9^2)
Now sine of the angle of elevation is 50/hypt. = 0.984 or 0.98 to 2 dp.

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