Results 1 to 3 of 3
Like Tree1Thanks
  • 1 Post By TheEmptySet

Math Help - Problem Finding a Parametrization for a Circle

  1. #1
    Junior Member
    Joined
    Aug 2012
    From
    Texas
    Posts
    49

    Problem Finding a Parametrization for a Circle

    Hey guys,
    I am having a little difficulty solving a problem. It says: Find a parametrization for the circle having radius 3 and center (3, 4, −5) that lies in a plane parallel to the zx-plane.

    Well, I initially just combined the center with the radius to get parametric equations of :
    x = 3 + 3cost, y = 4, z = -5 +3sint, but this appears to be wrong. Can anyone tell me what I am doing wrong.

    Any help and feedback is greatly appreciated, thanks.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Behold, the power of SARDINES!
    TheEmptySet's Avatar
    Joined
    Feb 2008
    From
    Yuma, AZ, USA
    Posts
    3,764
    Thanks
    78

    Re: Problem Finding a Parametrization for a Circle

    Quote Originally Posted by Beevo View Post
    Hey guys,
    I am having a little difficulty solving a problem. It says: Find a parametrization for the circle having radius 3 and center (3, 4, −5) that lies in a plane parallel to the zx-plane.

    Well, I initially just combined the center with the radius to get parametric equations of :
    x = 3 + 3cost, y = 4, z = -5 +3sint, but this appears to be wrong. Can anyone tell me what I am doing wrong.


    Any help and feedback is greatly appreciated, thanks.
    You have a correct parameterization of a circle. The only thing I can think of is that they asked for it to have a certain orientation. The circle is oriented counter clockwise around the unit vector \mathbf{j} in the plane y=4
    Thanks from Beevo
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Aug 2012
    From
    Texas
    Posts
    49

    Re: Problem Finding a Parametrization for a Circle

    Quote Originally Posted by TheEmptySet View Post
    You have a correct parameterization of a circle. The only thing I can think of is that they asked for it to have a certain orientation. The circle is oriented counter clockwise around the unit vector \mathbf{j} in the plane y=4
    If it is oriented counter clockwise around the unit vector, how would it change the parametrization? Would it simply change the signs of my current parametrization?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: December 20th 2011, 11:13 AM
  2. Vector parametrization of a circle.
    Posted in the Calculus Forum
    Replies: 1
    Last Post: September 29th 2011, 11:41 PM
  3. Parametrization of the circle? HELP.
    Posted in the Calculus Forum
    Replies: 0
    Last Post: March 1st 2011, 12:45 PM
  4. Replies: 4
    Last Post: February 18th 2011, 01:48 PM
  5. Parametrization Plane Problem
    Posted in the Calculus Forum
    Replies: 1
    Last Post: April 25th 2008, 04:48 AM

Search Tags


/mathhelpforum @mathhelpforum