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Hitman42 [59]
3 years ago
12

I hot-air ballon is held at a constant altitude by two ropes that are anchored to the ground. One rope is 110 feet long and make

s an angle of 55° with the ground. The other rope is 105 feet long. What is the distance between the points on the ground at which the two ropes are anchored? (Enter your answer as a comma separated list. And your answer to the nearest whole number.)

Mathematics
1 answer:
scZoUnD [109]3 years ago
5 0
So hmm check the picture below

the first part, on the left is the guywire one

so let's use the law of sines

\bf \textit{Law of sines}
\\ \quad \\
\cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c}\\\\
-----------------------------\\\\
\cfrac{sin(56^o)}{43}=\cfrac{sin(B)}{51}\implies \cfrac{51\cdot  sin(56^o)}{43}=sin(B)
\\\\\\
sin^{-1}\left[ \cfrac{51\cdot  sin(56^o)}{43} \right]=\measuredangle B\implies 79.5\approx B

now, if the angle B is 79.5 and the other angle is 56, then A is the slack from 180, or 180 - 79.5 - 56, or 44.5

so, let's see what's the opposite side of A, or "x"

\bf \cfrac{sin(56^o)}{43}=\cfrac{sin(A)}{x}\implies \cfrac{sin(56^o)}{43}=\cfrac{sin(44.5^o)}{x}\\\\\\x=\cfrac{43\cdot sin(44.5^o)}{sin(56^o)}

---------------------------------------------------------------------------

now, the second one, you had in the picture, the one of the balloon
that's the right-side in the picture below

again, let's use the law of sines

\bf \cfrac{sin(55^o)}{105}=\cfrac{sin(B)}{110}\implies \cfrac{110\cdot  sin(55^o)}{105}=sin(B)
\\\\\\
sin^{-1}\left[ \cfrac{110\cdot  sin(55^o)}{105} \right]=\measuredangle B\implies 59.1\approx B

so if B is 59.1, angle A picks up the slack from 180, or 180 - 59.1 - 55, or 65.9

so, let's see what "x" is then  \bf \cfrac{sin(55^o)}{105}=\cfrac{sin(A)}{x}\implies \cfrac{sin(55^o)}{105}=\cfrac{sin(65.9^o)}{x}
\\\\\\
x=\cfrac{105\cdot sin(65.9^o)}{sin(55^o)}


on both cases, since the angles are in degrees, make sure your calculator is in Degree mode

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3 0
3 years ago
Mr. Gonzazales has only 42.50 to spend he wants to buy 29 t shirts including tax and some bracelets that cost 4.50 each includin
erica [24]

Answer:

He can buy <u>3 bracelets</u>.

Step-by-step explanation:

Given:

Mr. Gonzales has only 42.50 to spend he wants to buy 29 t shirts including tax and some bracelets that cost 4.50 each including tax.

Now, to find the number of bracelets he can buy.

Let the number of bracelets he can buy be x.

Price of each bracelets = 4.50.

Total amount to spend = 42.50.

Number of t-shirts = 29.

Now, to get the number of bracelets we put an equation:

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<em />4.50x=42.50-29\\\\4.50x=13.5<em />

<em>Dividing both sides by 4.50 we get:</em>

x=3.

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Therefore, he can buy 3 bracelets.

6 0
3 years ago
Find the volume to the nearest hundredth using 3.14 instead of Pi.
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22/7 lord to the nearest hundreds. 

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8 0
2 years ago
3. A savings account has a 3% interest rate. (a) Complete the ratio table shown. Show your work. Deposit ($) 100 50 300 Interest
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So, Here, On $100 deposit, amount of Interest = $12

So, for $50, it would be: $6

Then, for $300, it is: $36

b) If you deposit $200, then balance after 1 year, 
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A = 200(1 + 0.03)^1

A = 200(1.03)
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Now, Balance with $150
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Difference = 206 - 154.5 = $51.5

In short, Your Answer would be: $51.5

Hope this helps!

6 0
3 years ago
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