« previous next »
Pages: [1]   Go Down

Author Topic: Need help in a maths question :)  (Read 1234 times)

Offline blast_23

  • Newbie
  • *
  • Posts: 11
  • Reputation: 363
Need help in a maths question :)
« on: April 18, 2011, 10:03:51 pm »
Hey guys ! i came across a circle theorm question and i have no idea how to figure it out , help would be appreciated

Maths 0580 s10_qp21 question 17 (c)

Thank you :)
Logged

Offline NotAbod

  • Wikipedia Contributor
  • Global Moderator
  • SF Farseer
  • *****
  • Posts: 3929
  • Reputation: 65535
  • Gender: Male
Re: Need help in a maths question :)
« Reply #1 on: April 18, 2011, 10:30:26 pm »
give me 10 mins max
Logged

Offline NotAbod

  • Wikipedia Contributor
  • Global Moderator
  • SF Farseer
  • *****
  • Posts: 3929
  • Reputation: 65535
  • Gender: Male
Re: Need help in a maths question :)
« Reply #2 on: April 18, 2011, 10:39:17 pm »
17-a-   BOC = 90-38 = 52 (perpendicular bisector of AB, BOD= 90 )

b- CBO = (180-2) / 2 = 64 ( OB = OC = Radius of circle)

c- angle E = 19, why? COD = half CED
therefore EDO = 180 - ( 90+ 19) = 71

:)
Logged

Offline blast_23

  • Newbie
  • *
  • Posts: 11
  • Reputation: 363
Re: Need help in a maths question :)
« Reply #3 on: April 18, 2011, 11:05:10 pm »
Thx alot abod :D
Logged

Offline NotAbod

  • Wikipedia Contributor
  • Global Moderator
  • SF Farseer
  • *****
  • Posts: 3929
  • Reputation: 65535
  • Gender: Male
Re: Need help in a maths question :)
« Reply #4 on: April 18, 2011, 11:09:46 pm »
Your most welcome :)
Logged
Pages: [1]   Go Up
« previous next »