# Stuck with Vector Question

#### mathematicallyretarded

Hey guys! I am just stuck with a simple vector question and I need a little help!

if possible can I get some help?

Thanks for your time everyone (Nod)

#### earboth

MHF Hall of Honor
Hey guys! I am just stuck with a simple vector question and I need a little help!

if possible can I get some help?

Thanks for your time everyone (Nod)
1. Determine the vector $$\displaystyle \overrightarrow{AB}=(8,2)$$. And now calculate the length of $$\displaystyle \overrightarrow{AB}$$.

2. As I've noticed in your previous post you know how to get a unit vector. Go on!

3. Keep in mind that the positive x-axis points in the same direction as the vecor $$\displaystyle \vec a = (1,0)$$

• mathematicallyretarded

#### mathematicallyretarded

1. Determine the vector $$\displaystyle \overrightarrow{AB}=(8,2)$$. And now calculate the length of $$\displaystyle \overrightarrow{AB}$$.

2. As I've noticed in your previous post you know how to get a unit vector. Go on!

3. Keep in mind that the positive x-axis points in the same direction as the vecor $$\displaystyle \vec a = (1,0)$$
ok i think i got it right up to question 3. I think i'm getting confused about which angle to work out.

I think i just needed to plot the AB vector and find the angle between the vector line and x-axis