1. Not finding help here? Sign up for a free 30min 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!

Find the cosine of the angle between the normals to the planes

  1. Jan 31, 2013 #1
    1. The problem statement, all variables and given/known data

    Find the cosine of the angle between the normals to the planes:

    x+y+2z=3 and 2x-y+2z=5

    2. Relevant equations[/b]

    x+y+2z=3 and 2x-y+2z=5

    3. The attempt at a solution

    All I know is cos θ= V * W / ||V|| ||W||
     
  2. jcsd
  3. Jan 31, 2013 #2

    Dick

    User Avatar
    Science Advisor
    Homework Helper

    The first step is to find the vectors that are normal to the planes. If you don't know how to do that try and look it up.
     
  4. Jan 31, 2013 #3

    Dick

    User Avatar
    Science Advisor
    Homework Helper

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Find the cosine of the angle between the normals to the planes
  1. Angle between planes (Replies: 8)

  2. Angle between planes (Replies: 4)

Loading...