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: How to do this question?

  1. Nov 4, 2006 #1
    If you were given vector A times vector B equals -10 and vector A times vector B = ABcos(x), how do you find x? also what plane is vector A and vector B on?
     
  2. jcsd
  3. Nov 4, 2006 #2
    x = arc cos(-10/AB)
    Translate vectors so that they touch each other, or intersect and they determin the plane they are in
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook