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#1 2012-12-11 12:49:32

infinitebrain
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Vector Problem

Ima Hyker is camped out in the forest. After breakfast she walks 16 km on a bearing
of 327 then she walks 12 km on a bearing of 237. What bearing will Ima have to
walk to head straight back to her camp? (nearest degree)

I know how to work it mathematically, but I need a good visual representation smile! Could any of you do me a favor and graph it to show me to you can graphically look at this?


The best thing about life is you don't know what to expect

#2 2012-12-11 13:40:41

bobbym
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Re: Vector Problem

Hi infinitebrain;

I know nothing about bearings. I get lost going around the corner. I navigate by taking a big ball of twine with me and letting it out as I go. Then I follow it back. I do not use bread crumbs because wasting food is wrong.

Here is what I drew:


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In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#3 2012-12-11 18:55:33

bob bundy
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Re: Vector Problem

hi infinitebrain,

To avoid confusion amongst navigators, and so that they can use a magnetic compass to determine which way to go, bearings are measured clockwise from North.

I have made a sketch of the problem.  The distances and angles are not accurately shown.

Bob


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You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

#4 2012-12-12 11:43:17

infinitebrain
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Re: Vector Problem

Thank you bob and bobbym! You've both been a enormous help! big_smile


The best thing about life is you don't know what to expect

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