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dimulka [17.4K]
2 years ago
15

Danica is in the observation area of the sears tower in chicago overlooking lake michigan. She sights two sailboats going due ea

st from the tower. The angles of depression to the two boats are 42 degrees and 29 degrees. If the observation deck is 1,353 feet high, how far apart are the boats?

Mathematics
1 answer:
inessss [21]2 years ago
3 0

Answer:

The boats are far apart by 4506.1 feet

Step-by-step explanation:

from the graph attached

i) BC = 1353 \times tan(71\textdegree) = 2761.82 feet

ii) BD  = 1353 \times tan(58\textdegree) =  1744.28 feet

iii) the boats are far apart by = CD = CB + BD = 2761.82 + 1744.28 = 4506.1 feet

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Divide the 30x40 rectangle into 10 by 10 squares of 100
kolbaska11 [484]

Answer:

12 squares

Step-by-step explanation:

Data provided:

Dimension of the rectangle = 30 × 40

Area of the rectangle = 30 × 40 = 1200

Dimension of the area to be divided = 10 × 10

Thus,

Area of the square to be divided into = 100

Therefore,

The number of square in which it can be divided

= \frac{\textup{Total area of the rectangle}}{\textup{Area of the square}}

= \frac{\textup{1200}}{\textup{100}}

= 12

Hence,

It can be divided in 12 squares

4 0
2 years ago
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Answer:

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6 0
2 years ago
2. When Professor Rodríguez conducted the proofreading study, the average number of errors detected in the print and computer co
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Answer:

Answer in explanation

Step-by-step explanation:

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3 0
2 years ago
(8.03 LC)
Marrrta [24]
R = 9 in the equation r(6) = 54. You would divide by 6 on both sides to have r by itself giving you r = 9
3 0
2 years ago
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X=4/5 Y=4/X+SQRT X +0.2 -5X What is the value of Y
fenix001 [56]
You seem to be saying that Y=4/X+SQRT X +0.2 -5X, and that x is given as 4/5.  To evaluate <span>Y=4/X+SQRT X +0.2 -5X, replace each occurrence of x with 4/5:

y = 4 / (4/5) + sqrt(4/5) + 0.2 - 5(4/5)
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Can you simplify this further?

</span>
5 0
2 years ago
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