# A question on vectors...

1. Aug 16, 2015

### AR1399

1. The problem statement, all variables and given/known data
To find the component of one vector A along another vector B.

2. Relevant equations
Components are A(cos theta) and A(sin theta)

3. The attempt at a solution
What I tried was to consider the vector B as a "pseudo x axis" and draw a subsequent "pseudo y axis". Then, using angle between them, I found A(cos theta).
I'm not sure this is the correct method, so could someone point out how correctly to find it?

2. Aug 16, 2015

### ShayanJ

To find the component of a vector $\vec V$ in the direction of real x axis, you compute $\vec V \cdot \hat x$. What will it become for your "pseudo x axis"?

3. Aug 16, 2015

### AR1399

Ok, so if it is V vector . x cap, then for for V vector along B vector it should be
V vector . B cap, or rather, V vector . B vector / Magnitude(B vector), right?

NOW I got it!!! Thnx a ton man!