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## #1 2013-12-01 04:37:32

Al-Allo
Member
Registered: 2012-08-23
Posts: 324

### Vector question

Hi, I'm learning vectors and there's two notions which I don't distinguish :

Is the orientation of a vector (determined by the angle it has) the same thing as the direction of a vector ???

thank you

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## #2 2013-12-01 05:04:08

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 106,389

### Re: Vector question

Hi;

It is a fine point, my notes read like this,

The direction of a vector is a built in property of that vector, you can define the direction of a vector without any reference to the outside world.

Orientation depends on how it is placed with respect to other vectors (like a basis).

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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## #3 2013-12-01 05:19:48

Al-Allo
Member
Registered: 2012-08-23
Posts: 324

### Re: Vector question

mmmmmhh...... not sure....

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## #4 2013-12-01 05:29:54

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 106,389

### Re: Vector question

Part of it can be backed up here on the first page:

http://www.eng.auburn.edu/~marghitu/MEC … 1_2110.pdf

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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## #5 2013-12-01 10:08:53

Nehushtan
Member
Registered: 2013-03-09
Posts: 880
Website

### Re: Vector question

Orientation is the angle the vector makes with a fixed axis, e.g. the x-axis. Direction is whether its pointing up or down, or left or right.

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