1. Not finding help here? Sign up for a free 30min 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!

Geometry proofs.

  1. Apr 28, 2010 #1
    I need help in how to do this proof.


    A circle is given with diameter AB. pick any point C on the circle and drop a perpendicular from C to the given diameter at D. Find CD in terms of AD and BD.
     
  2. jcsd
  3. Apr 28, 2010 #2

    kuruman

    User Avatar
    Homework Helper
    Gold Member

    Connect C to A and to B. What kind of triangle is triangle ABC?
     
  4. Apr 28, 2010 #3
    An easier way: Let O be the centre of the circle. Then OC = OA = (AD+BD)/2. Then look at the triangle ODC to find the answer.
     
  5. Oct 28, 2011 #4
    I understand upto where you have reached but I still cant proceed from there
     
  6. Oct 28, 2011 #5
    all sides are unequal
     
  7. Oct 28, 2011 #6

    LCKurtz

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    What do you know about angle ACB?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Geometry proofs.
  1. Geometry proof (Replies: 3)

  2. Geometry proof (Replies: 2)

  3. Geometry proofs (Replies: 3)

Loading...