Results 1 to 2 of 2

Math Help - Co-ordinates

  1. #1
    Senior Member
    Joined
    Feb 2008
    Posts
    383

    Co-ordinates

    The points A, B and C have Co-ordinates (5,1)(p,7)(8,2) respectively.

    Given that AB is twice the distance of AC. Calculate the possible values of p.
    Thanks!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Dec 2009
    Posts
    3,120
    Thanks
    1
    You\ have\ two\ solutions.

    Calculate\ the\ length\ of\ AC\ using\ Pythagoras'\ theorem.

    Then\ B\ lies\ on\ a\ circle\ of\ twice\ that\ radius.

    The\ y\ co-ordinate\ of\ both\ points\ is\ 7.

    Solve\ for\ the\ two\ values\ of\ x.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Polar Co-ordinates
    Posted in the Calculus Forum
    Replies: 10
    Last Post: April 13th 2011, 11:33 AM
  2. work out the co ordinates
    Posted in the Algebra Forum
    Replies: 18
    Last Post: April 7th 2011, 11:47 PM
  3. Finding co-ordinates
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: October 20th 2009, 11:49 PM
  4. co-ordinates
    Posted in the Algebra Forum
    Replies: 2
    Last Post: April 3rd 2009, 04:36 PM
  5. Co-ordinates
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: March 16th 2006, 06:08 AM

Search Tags


/mathhelpforum @mathhelpforum