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
V125BC [204]
3 years ago
9

A ladder leans against a building. The angle of elevation of the ladder is 70°. The top of the ladder is 25 ft from the ground.

To the nearest tenth of a foot, how long is the ladder?
Mathematics
2 answers:
EastWind [94]3 years ago
8 0
<u>32.9 ft</u> 
That's the answer!
Hope it helps! 
jeyben [28]3 years ago
4 0
Sine rule

a/Sin(A) = b/Sin(B) = c/Sin(C)
     b
 C / |
a / _| A 
    B  c

We know that a = 70 degrees and A = 25 foot
So 70/Sin(25) = Something
We also know we want C, and that c = 90 degrees
So 70/Sin(25) = 90/Sin(C)
Then you have to rearrange the equations. Start with Multiply all by Sin(C)
So [Sin(C)][70/Sin(25)] = 90
Then divide everything by 70/Sin(25)
So Sin(C) = 90/[70/Sin(25)]
Now you want to isolate C, so Sin-1 everthing
So C = Sin-1{90/[70/Sin(25)]}
So C = 32.91309534
To the nearest tenth, 32.9ft
Hope that helps :)
You might be interested in
Name a pair of fractions that use the least common denominator and are equivalent to 9/10 and 5/6
Vikentia [17]
The least common denominator is 30. :)
8 0
3 years ago
Complete the statement to explain why 300 / 30 = 10
aev [14]
300 divided by 30 will make 30 groups of 10.
7 0
3 years ago
A cone has a height of 8 inches in diameter of 6.4 inches what is the volume of the cone?
maxonik [38]
The volume of the cone is 85.79 since the radius is 3.2
5 0
3 years ago
7 more than d is equal to 19
galben [10]

7+d=19 is the answer

subtract 7 from each side d=19-7

d=12


4 0
2 years ago
Read 2 more answers
(a(1) = 5/3<br> (a(n) = a(n − 1).(-9)<br> What is the 3rd term in the sequence?
nataly862011 [7]

Answer:-30

Step-by-step explanation:

Third term=a3

an=a(n-1) x (-9)

a3=5/3 x (3-1) x (-9)

a3=5/3 x 2 x -9

a3=(5x2x-9)/3

a3=-90/3

a3=-30

5 0
3 years ago
Other questions:
  • Help me please please
    15·1 answer
  • Your uncle is starting new exercise program. To maintain his current weight, the program suggests a daily calorie intake of 2800
    11·1 answer
  • What fraction of a year is 285 days
    11·1 answer
  • A class of 20 students is visiting the fair today. Each student is 16 years old or younger and will participate in
    9·2 answers
  • I need a step by step explanation how to solve for the solutions of this (Not by graphing)
    7·1 answer
  • A diagram of a room is shown. If the perimeter of the room is 78 feet, what is the area of the floor of the room?
    9·1 answer
  • Please help! 50 points :) I'll report if you answer just to get points without answering my question -_-.
    14·1 answer
  • Sam is covering her rectangular pool for the winter. The area of the cover is x² + 13x + 42 ft². The length of the cover is (x +
    5·2 answers
  • How many degrees are there in one radian?
    12·2 answers
  • Find a degree 3 polynomial that has zeros -2,3 and 6 and in which the coefficient of x^2 is -14. The polynomial is: _____
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!