1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Olegator [25]
2 years ago
12

A person whose eye level is 15 feet above the ground is looking at a building. The angle of elevation to the top of the building

is 40° and the angle of depression to the bottom of the building is 15°. What is the height in feet of the building?
Mathematics
1 answer:
uysha [10]2 years ago
4 0

Answer:

61.97 feets

Step-by-step explanation:

Using trigonometry :

Horizontal distance between the person and building,

Let distance = d

Tan 15 = 15 / d

0.2679491 * d = 15

d = 15 / 0.2679491

d = 55.980781

To obtain the height, h :

tan 40 = (h-15)/d

d = 55.98

h-15 = 55.98 (tan 40°)

h - 15 = 55.98 * 0.8390996

h - 15 = 46.972797

h = 46.972797 + 15

h = 61.972797

h = 61.97 feets

You might be interested in
If I made $20 in 4 hours, what is the rate at which I made money?
slega [8]

Answer:

it would be five each hour.

Step-by-step explanation:

8 0
3 years ago
Please help me and explain to me!
Vadim26 [7]
I believe the answer is 19.2 because you would have to do paythag. = a^2+b^2=c2 in this case it would be 7^2 + 10^2 = c
From there you would get the answer of 149, and you would have to square root it. When you square root 149 you get 12.2
12.2 + 7 = 19.2
You would add them together because you want to know the height before it broke.
7 0
2 years ago
Read 2 more answers
W+w+w+w+w+15-7 I got this wrong on a math question. I did 5w+8 = 13w ​
Aleonysh [2.5K]

w+w+w+w+w+15-7=\underbrace{w+w+w+w+w}_5+(15-7)\\\\=5w+8-\text{finish}\\\\\text{You can not add 5w and 8. These are different monomials.}

Example:

5w - five apples

8 - eight strawberries

5w + 8 = (five apples) + (eight strawberries) = 13 of what?

You can add only numbers of the same fruits.

4 0
3 years ago
Read 2 more answers
Is 262015 divisible by 4?
eduard

Answer:

65503.75

Step-by-step explanation:

262015 divisble by 4 = 65503.75

4 0
3 years ago
Read 2 more answers
Tim sold half of his comic books and then bought 9 more. He now has 17 . How many did he begin with
Agata [3.3K]

Answer:

16

Step-by-step explanation:

17-9=8

8*2=16

Because had 8 but bought 9 more to where he then had 17 but if you take 8 times 2 then your answer is 16 and that's how many comic books he began with.

Hope this helps


3 0
3 years ago
Read 2 more answers
Other questions:
  • Tape travels through a tape player at a speed of 0.048 meters per second how long is a tape that can play for 30 minuets
    5·1 answer
  • What is the first step in constructing an inscribed circle inside of triangle XYZ?
    15·1 answer
  • Simplify this expression <br> (1/3 + 11/12)×2/3
    9·1 answer
  • Describe a way in which the diagram above illustrates the unique line postulate.
    15·1 answer
  • 16% of 23 <br> please helpppppp <br> 1% of the same number is 4.6
    6·1 answer
  • Mrs. Sampson's bill at a restaurant was $44.00. How much money should Mrs. Sampson tip if she wishes to tip 15%?​
    12·2 answers
  • If y=5x-3(3x+7), what is the value of x when y=-18?
    10·1 answer
  • help me with this page please!! please mark your answers with the questions or do it by order, and i will mark brainliest.
    15·1 answer
  • Let A=3i-j-4k,B=-2i+4j-3k and C=i+2j-k compute 2A-B+3C​
    7·1 answer
  • Is 21/2:3 and 16:6 equivalent
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!