Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

heatherw89 Group Title

Lines CD and DE are tangent to circle A shown below. If CE is 112°, what is the measure of ∡CDE?

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. dpaInc Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    picture?

    • 2 years ago
  2. heatherw89 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    • 2 years ago
  3. bluepig148 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Angle on outside of a circle is 1/2 difference of the arcs. One of the arcs is 112 (given). Other is 360 - 112 = 248 because there are 360 degrees in a circle. Setting up our equation, ans = (1/2)(248 - 112) = (1/2)(136) m∡CDE = 68 degrees

    • 2 years ago
  4. campbell_st Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    a little construction to find the angle join AC and AE to form a kite.. AC = AE equal radii and DC = CE tangents from an external point are equal Angle ACD = angle AED both 90... tangent and radius intersect at right angles Angle CAE = 112 angle subtended by the arc CE then ANgle CDE = 360 - 90-90 -112 angle sum of a quadrilateral angleCDE = 68

    • 2 years ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.