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!

Cross product

  1. Oct 9, 2008 #1
    I have a question about solving a problem involving a cross product. I understand how to find [tex]\vec{a}[/tex] X [tex]\vec{b}[/tex] = [tex]\vec{c}[/tex], but if [tex]\vec{a}[/tex] and [tex]\vec{c}[/tex] are given how do I find [tex]\vec{b}[/tex]? Is there something I can do analogous to c/a =b? I've been reviewing my old calc III and linear algebra notes, but I havn't been able to figure it out. Any help would be most appreciated.

    Thanks
     
  2. jcsd
  3. Oct 9, 2008 #2

    Ben Niehoff

    User Avatar
    Science Advisor
    Gold Member

    Given a and c, there are several possible vectors b such that a x b = c. They all lie in the plane perpendicular to c.
     
  4. Oct 10, 2008 #3
    do you know how to find a vector that is perpendicular to another vector?
     
  5. Oct 19, 2008 #4
    a x c = b

    since b is a vector that is perpendicular to both a and c .. :-D
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Cross product
  1. Cross Product (Replies: 6)

  2. Cross Products (Replies: 8)

  3. The Cross Product (Replies: 4)

Loading...