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erastovalidia [21]
3 years ago
5

Find the angle of elevation from the point on the ground 90 feet from the base of a building that is 200 feet tall

Mathematics
2 answers:
Aleksandr-060686 [28]3 years ago
7 0
You didn't say so, but I'm assuming that what you want is the angle of elevation
when you're looking at the top of the building.

Also, since you didn't specify it, we have to assume that you and the building
are on level ground, and we also have to assume that your eye is located at
ground level. In other words, your eye is level with the base of the building.

Now ... The building is perpendicular to the ground.  So the building, the line
on the ground from the building to you, and the line of sight from your eye to
the top of the building, form a right triangle.

The angle we need is the angle located at your eye.  The line along the ground
from the building to you is the side of the triangle that's adjacent to that angle. 
And the building is the side of the triangle that's opposite that angle.

The tangent of the angle is (opposite) / (adjacent) = 200/90 = 2.2222...

Put that number into your calculator, and find the angle whose tangent it is.
(That's called the 'arctangent' of 2.2222, or tan⁻¹(2.2222) .)

The angle is about 65.77 degrees.  (rounded) 
DanielleElmas [232]3 years ago
6 0
Look\ at\ the\ picture.\\\\tg\alpha=\frac{200}{90}\\\\tg\alpha=\frac{20}{9}\\\\tg\alpha=2.222...\\\\\alpha\approx66^o

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Alik [6]
The answer is A in my opinion
8 0
2 years ago
Hexagon DEFGHI is translated on the coordinate plane below to create hexagon D'E'F'G'H'I'.
Vedmedyk [2.9K]
Each point is moved 7 units down and 7 units right. Therefore it is translation.

Since a hexagon is translated 7 units right, x-coordinates of its points are increased by 7.

Since a hexagon is translated 7 units down, y-coordinates of its points are decreased by 7.

(x,y) \rightarrow (x+7,y-7)

8 0
3 years ago
Brooklyn Bridge is 5,985 ft long and 85 ft wide. What distance is one sixth of its length
I am Lyosha [343]

Answer:

The distance is 997.5 ft.

Step-by-step explanation:

Given:

Length of Brooklyn Bridge = 5,985 ft.

Width of Brooklyn Bridge = 85 ft.

We need to find the Distance

Distance = \frac{1}{6}\times lenght

Substituting the value of length to find distance we get;

Distance = \frac{1}{6}\times 5985 = 997.5 ft.

Hence Distance is 997.5 ft.

5 0
3 years ago
tonya is twice kevin's age. in three years tonya will be 17. and in another three years, uncle rob will be three times tonyas ag
atroni [7]
Tonya is 14 (17 - 3) 
<span>Kevin is 7 </span>
<span>Uncle Rob is 51 (3 x 17 = 54, less 3)</span>
3 0
3 years ago
Read 2 more answers
Can someone please help me ASAP.....
tester [92]

We have to start with a number x, compute f(x), and then use this result as input for g(x)

When you give x as input to f, it returns -x^2-1:

x\mapsto f(x)-x^2-1

Now, g(x)=x+5 simply means that g will return its input plus five.

In this case, the input is f(x), so we have

g(f(x))=f(x)+5 = -x^2-1+5=-x^2+4

5 0
3 years ago
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