Results 1 to 3 of 3

Math Help - circles...

  1. #1
    Newbie
    Joined
    Jul 2006
    Posts
    9

    circles...

    I have a point a 3D space (say 0,0,0), a radius of the circle(say 2m), and know a single point that lies on the circle at a certain x co-ordinate, and have the corresponding y coordinate for the point on the circle. How can I calculate the Z co-ordinate for this point given the above parameters?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by kevd
    I have a point a 3D space (say 0,0,0), a radius of the circle(say 2m), and know a single point that lies on the circle at a certain x co-ordinate, and have the corresponding y coordinate for the point on the circle. How can I calculate the Z co-ordinate for this point given the above parameters?
    Either I have misunderstood your question, or there is no way, a circle in 3D
    is not determined by centre, radius and a point. You need at least two points.

    RonL
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Jul 2006
    Posts
    9
    its ok, i probably explained it badly, i figured it out 5 mins after posting, and forgot to withdraw the post. Cheers anyway
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Prove that every rigid motion transforms circles into circles
    Posted in the Differential Geometry Forum
    Replies: 4
    Last Post: February 11th 2010, 07:00 PM
  2. Replies: 2
    Last Post: October 6th 2009, 09:04 AM
  3. going in circles
    Posted in the Pre-Calculus Forum
    Replies: 4
    Last Post: July 23rd 2009, 11:57 AM
  4. Circles!
    Posted in the Trigonometry Forum
    Replies: 5
    Last Post: July 16th 2009, 08:50 PM
  5. circles
    Posted in the Geometry Forum
    Replies: 1
    Last Post: October 16th 2008, 04:40 AM

Search Tags


/mathhelpforum @mathhelpforum