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
Serhud [2]
3 years ago
15

The angle of elevation of an unfinished tower from a point of 120m away from its base is 25 degrees. How much higher will the to

wer need to be raised so that its angle of elevation from the same point will be 40 degrees?
Mathematics
1 answer:
Sav [38]3 years ago
4 0

Answer:

44.73 m

Step-by-step explanation:

Given that the angle of elevation of an unfinished tower from a point of 120m away from its base is 25 degrees.

Using trigonometry ratio, the height of the tower can be calculated by

Tan Ø = height / base

Tan 25 = height / 120

Make height the subject of formula

Height = 120 × tan 25

Height = 55.96 m

How much higher will the tower need to be raised so that its angle of elevation from the same point will be 40 degrees?

Using the same formula to calculate the new height.

Tan 40 = new height / base

Tan 40 = new height / 120

Make the new height the subject of the formula.

New height = 120 × tan 40

New height = 100.69 m

Increase in height = new height - height

Increase in height = 100.69 - 55.96

Increase in height = 44.73m

Therefore, the tower will need 44.73m to be raised so that its angle of elevation from the same point will be 40 degrees.

You might be interested in
the__________ on an investment is the investor’s gain or loss on the investment over a period of time.
Naily [24]
Return is the answer. That's the gain or loss returned from the investment.
4 0
2 years ago
Read 2 more answers
9. Simplify the expression: 8(5x-3y) *
olasank [31]

Answer:

40x- 24y

Step-by-step explanation:

7 0
3 years ago
The original price of a jacket was 72.50$ Maria used a coupon for 20% off to buy the jacket. How much did she pay before tax?
Afina-wow [57]

Answer: Maria payed $58.00 for her jacket BEFORE tax.

Step-by-step explanation:

To find the answer to this question, we must first multiply 72.50 by 0.20. After doing so, we get 14.5 (this is the sale money). Finally, we subtract $72.50-14.5 to get out answer, 58 dollars.

3 0
3 years ago
Find the value of x.
earnstyle [38]

Answer:

110 degrees

Step-by-step explanation:

The sum of all the interior angles of a polygon is always equal to 180(n-2) where n is the number of sides. In this figure, there are 7 sides. This means that the sum of all the interior angles is 180(7-2) = 180 * 5 = 900.

Now, add up all the angles that you know and subtract that from 900 to find the value of x.

900 - (105 + 150 + 140 + 135 + 125 + 135) = 900 - 790 = 110 degrees

7 0
3 years ago
Read 2 more answers
What is the domain of the following graph? Please don't put links down I cant download them.
rosijanka [135]

Answer:

-infinity, infinity

Step-by-step explanation:

Domain is x, and in a quadratic equation like this one the x axis goes on forever. So the first answer of -infinity, infinity is correct.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Hi I am not good at math so I need help please
    5·1 answer
  • What is the length of the line segment EF?
    9·1 answer
  • Need help with this problem​
    14·1 answer
  • Factor completely: 3x2 + 5x + 1 . . CHOICES: A] (3x + 1)(x + 1) . B] (3x + 5)(x + 1) . C] (3x − 5)(x + 1) . D] Prime
    9·2 answers
  • Solution for 3/4x - 12 = -18?
    11·2 answers
  • What is the slope of the line with equation y = -7x?
    8·2 answers
  • Please please help please please ASAP
    13·2 answers
  • 8. Find the measures of the three angles of a triangle if the sum of the measure of the first angle and three times
    11·1 answer
  • Another name for simple average is the ______. <br><br> a. average<br> b. simple average<br> c. mean
    9·1 answer
  • Help eleleleeeeeeeeeeeeeeeeeeeeee
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!