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: The height of a triangle, given 2 vectors and the area

  1. Apr 24, 2010 #1
    1. The problem statement, all variables and given/known data
    Triangle ABC formed by two vectors a = ( 2, 10, 25 ) and b = ( 5, 4, -2 ) attached at a point A.
    The area of the triangle is (81 root 5) / 2
    And I need to find the length of the height AM (AM perpendicular to BC and the point M belongs to the line BC).
    Don't know where to start!

    2. Relevant equations
    Area = 0.5 *h *b
  2. jcsd
  3. Apr 24, 2010 #2


    User Avatar
    Homework Helper

    Hint: find the magnitude of the difference of the two given vectors first.
  4. Apr 24, 2010 #3


    User Avatar
    Science Advisor
    Homework Helper

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook