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having trouble with this one :confused:

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- Aug 9th 2006, 07:36 PMbigstarzHelp with Vectors plz
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having trouble with this one :confused: - Aug 9th 2006, 08:33 PMThePerfectHacker
The vector sum of all these vectors would be your answer.

But you need to express every vector in the form, ---> The*components*of your vector.

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In order to solve this problem we need to develope a formula. Let be the angle from the x-axis (meaning measure conterclockwise).

Then if are the endpoints of the vector. The length is . And

In order to solve this problem. You need to solve for both

More simply,

Now, divide the second equation by the first to get, (it is nonzero)

Thus,

Similary,

As a result we have converstion formula:

*If the the endpoints of a vector having length and angle meausured from the x-axis then,*

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Now construct a chart in terms of , i.e. counterclockwise angle.

Therefore you new table is,

Now use the converstions formula posted above to find the coordinates.

So you have,

Now by the rule of vectors you can add their components thus,

Now compute the length,

- Aug 9th 2006, 10:06 PMearbothQuote:

Originally Posted by**bigstarz**

in addition to TPHs result: Calculate the direction between starting point to ending point by the components of the resulting vector [-32.97 , 30.16]:

. Thus

Greetings

EB