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laiz [17]
3 years ago
15

A person is going to fly from New York to London. If he leaves at 4:00 p.m., Eastern Standard Time and the flight lasts 4 1/2 ho

urs, at what time should he set his watch when he arrives in London?
Mathematics
2 answers:
Lyrx [107]3 years ago
7 0
If they leave at 4 pm it is 5 hours ahead so it will be 7 pm

PtichkaEL [24]3 years ago
5 0
BST is 5hr ahead of EST.
The flight lasts 4.5hr.
The time when he arrives in London will be 9:30 ahead of the starting time.
4:00pm + 9:30 = 01:30, military time.
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A. The approximate height of the building is 100 m

B. We can use the arc length formula to obtain an approximation of BC since angle A is small.

A.

The approximate height of the building is 100 m

To find the approximate height of the building, we consider the diagram.

From the diagram, we have that using trigonometry,

tanA = BC/AB

Now

  • A = 0.05 radians,
  • BC = height of building and
  • AB = 2 km = 2000 m
<h3 /><h3>Finding the value of BC</h3>

So, making BC subject of the formua, we have

BC = ABtanA

Substituting the values of the variables into the equation, we have

BC = ABtanA

BC =2000tan0.05

BC = 2000 × 0.05

BC = 100 m

So, the approximate height of the building is 100 m

B.

We can use the arc length formula to obtain an approximation of BC since angle A is small.

<h3 /><h3>Arc Length Formula</h3>

We know that the arc length formula L = rФ where

  • r = radius and
  • Ф = angle in radians
<h3 /><h3>The approximate height</h3>

Now BC = ABtanA

We know that Ф ≅ tanФ when Ф is small.

<h3 /><h3>The comparison</h3>

So, BC = AB × A which is the arc length formula with

  • L = BC,
  • r = AB and
  • Ф = A

So, we can use the arc length formula to obtain an approximation of BC since angle A is small.

Learn more about approximate height of building here:

brainly.com/question/3144976

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Given:

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Answer:

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Step-by-step explanation:

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