1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Few questions concerning vectors, not a clue where to start on these.

  1. Nov 11, 2009 #1
    1. The problem statement, all variables and given/known data

    Ok, so here are the questions, I literally have no idea how to begin on them.

    1.Show that the vector 2i+3j+3k is normal to the plane containing the points (1,1,-2), (4,2,-5) and (1,-1,0). Hence find the equation of the plane in the form

    what is the perpendicular distance from the origin to the plane?

    There are a couple more questions but i'll take them one at a time.

    3. The attempt at a solution

    Been looking through my notes for ages and on th internet, cant find anything that makes sense, anyone good with vectors? thanks :)
    Last edited: Nov 11, 2009
  2. jcsd
  3. Nov 11, 2009 #2
    construct aline lying in the plane using two of the given points and dot product it with the line you were given in the question - if they're orthogonal this will vanish.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook