Results 1 to 2 of 2

Math Help - [SOLVED] Tangent?

  1. #1
    Member
    Joined
    Sep 2008
    Posts
    222

    [SOLVED] Tangent?

    Sorry for the really sloppy graph. They are suppose to be two circles, it's just that I don't know how to draw circles with my graph sketcher.

    Note: Figure not drawn to scale

    This is on page 839 of the OG Book.

    In the figure below, the two circles are tangent (what is a tangent?) at point B and AC=6. If the circumstances of the circle with center A is twice the circumference of the circle with center C, what is the length of line segment BC?

    a) 1
    b)2
    c)3
    d)4
    e)6

    Any tips?

    Thanks in advance
    Attached Thumbnails Attached Thumbnails [SOLVED] Tangent?-839.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    earboth's Avatar
    Joined
    Jan 2006
    From
    Germany
    Posts
    5,830
    Thanks
    123
    Quote Originally Posted by fabxx View Post
    Sorry for the really sloppy graph. They are suppose to be two circles, it's just that I don't know how to draw circles with my graph sketcher.

    Note: Figure not drawn to scale

    This is on page 839 of the OG Book.

    In the figure below, the two circles are tangent (what is a tangent?) The 2 circles have exactly one point in common at point B and AC=6. If the circumstances of the circle with center A is twice the circumference of the circle with center C, what is the length of line segment BC?

    a) 1
    b)2
    c)3
    d)4
    e)6

    Any tips?

    Thanks in advance
    Circles are similar to each other. The ratio of the circumferences is equal to the ratio of the radii. Therefore the radius at A is twice as long as the radius at C.
    Therefore the radius at C = BC must be 2, the other one is 4.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. [SOLVED] Gradient of a Tangent.
    Posted in the Calculus Forum
    Replies: 5
    Last Post: October 21st 2009, 02:37 AM
  2. [SOLVED] Slope of a Tangent
    Posted in the Calculus Forum
    Replies: 2
    Last Post: February 9th 2009, 03:25 PM
  3. [SOLVED] equation of a tangent to circle
    Posted in the Calculus Forum
    Replies: 2
    Last Post: January 8th 2009, 03:04 PM
  4. [SOLVED] Tangent plane
    Posted in the Calculus Forum
    Replies: 1
    Last Post: September 5th 2008, 01:38 PM
  5. [SOLVED] Tangent question
    Posted in the Geometry Forum
    Replies: 3
    Last Post: June 16th 2008, 02:05 PM

Search Tags


/mathhelpforum @mathhelpforum