Vectors and algebra

[Roseishere]

Hi,
I have been rlly stuck on the attached question and wonderd if anyone could help.

Thankyou

 

[Dr.Peterson]

Hi,
I have been rlly stuck on the attached question and wonderd if anyone could help.

Thankyou

Sure. What help do you need?

Please show whatever work you can do (even if it's just a poor attempt at (a)), so we can see where you are stuck. We may also want parts (b) and (c) and your answers, since they may be leading you toward (d).

Read our guidelines for a reminder why I ask for this:

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[HallsofIvy]

Could you at least get "(a) Write \(\displaystyle \vec{AB}\) in terms of a and b."?
That's pretty basic.