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A question on vectors...

  1. Aug 16, 2015 #1
    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. jcsd
  3. Aug 16, 2015 #2


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    Gold Member

    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"?
  4. Aug 16, 2015 #3
    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!
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