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# Vectors question Watch

1. I've been given the following. The angle ACO is 15 degrees and BCO is 30 degrees. The O is meant to be the origin not a length.

Find the lengths of OB and OC, done that and respectively. Then I'm asked to find the coordinates of vectors AB AC and BC.

Now I'm not too sure on this part, as I haven't been given any points. All I've managed to do is rewrite it as OB-OA etc.
2. (Original post by Music99)
I've been given the following. The angle ACO is 15 degrees and BCO is 30 degrees. The O is meant to be the origin not a length.

Find the lengths of OB and OC, done that and respectively. Then I'm asked to find the coordinates of vectors AB AC and BC.

Now I'm not too sure on this part, as I haven't been given any points. All I've managed to do is rewrite it as OB-OA etc.
The question is impossible to answer given the information posted.

[You must have been given more information than you have posted or you wouldn't have been able to find the lengths OB and OC.]
3. Um, this is a duplicate thread of:

http://www.thestudentroom.co.uk/show....php?t=2313111

And yeah, the extra info was that A is on the x-axis, B is on the y-axis, and C is on the z-axis.
4. (Original post by DFranklin)
The question is impossible to answer given the information posted.

[You must have been given more information than you have posted or you wouldn't have been able to find the lengths OB and OC.]
Hi, yes sorry this is a duplicate thread of http://www.thestudentroom.co.uk/show...111&p=42129477

A is on the x- axis B on the y and C on the z.

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