- #1

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Making a turn, a jetliner flies 2.1km on a circular path of radius 3.4km. Through what angle does it turn?

Any ideas that would help me in doing it??

thanks

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- Thread starter torresmido
- Start date

- #1

- 20

- 0

Making a turn, a jetliner flies 2.1km on a circular path of radius 3.4km. Through what angle does it turn?

Any ideas that would help me in doing it??

thanks

- #2

- 192

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*hint* arc length in trig.

- #3

- 798

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Why don't you try the forum specifically for homework, you will probably get more help there.

- #4

- 765

- 15

Draw a diagram.

- #5

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Making a turn, a jetliner flies 2.1km on a circular path of radius 3.4km. Through what angle does it turn?

Any ideas that would help me in doing it??

thanks

The formula for calculating the circumference [tex]\pi d[/tex]. You have the radius which is half the diametre, so in this case the diametre is 6.8. Now plug those figures into the formula. It should look like this...

[tex]\pi 6.8 = 21.35[/tex]

Now that you have the total circumference, you want to find out what fraction of the circumference the plane travels. I would do this by trying to find what 1 degree is, so I would go

[tex]\frac{360}{21.35}[/tex]

Now that you have what 1 degree is in relation to a length, you simply multiply

[tex]\frac{360}{21.35}2.1[/tex]

This will give you the angle in which the plane has travelled. It should be around 36 degrees but I will let you finish it off.

If you are having any trouble just say

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