My Math Forum  

Go Back   My Math Forum > High School Math Forum > Geometry

Geometry Geometry Math Forum


Thanks Tree3Thanks
  • 1 Post By mathman
  • 1 Post By skeeter
  • 1 Post By skipjack
Reply
 
LinkBack Thread Tools Display Modes
August 14th, 2017, 11:34 AM   #1
Newbie
 
Joined: Aug 2016
From: Pakistan

Posts: 8
Thanks: 0

Please Help Me about this problem

Using property of Circles please solve this problem Thanks in Advance
Attached Images
File Type: jpg 20170814_232243.jpg (85.3 KB, 13 views)
Hammad is offline  
 
August 14th, 2017, 02:00 PM   #2
Global Moderator
 
Joined: May 2007

Posts: 6,398
Thanks: 546

Your note is very hard to read. I suggest you type it in directly.
Thanks from Hammad
mathman is offline  
August 14th, 2017, 04:01 PM   #3
Math Team
 
Joined: Jul 2011
From: Texas

Posts: 2,678
Thanks: 1339

Your solution is correct.
Thanks from Hammad
skeeter is offline  
August 14th, 2017, 04:24 PM   #4
Global Moderator
 
Joined: Dec 2006

Posts: 18,245
Thanks: 1439

The answer is essentially correct, but it should be stated that angle A is calculated based on the fact that the angles of a triangle sum to 180°. The theorem about angles subtended is stated inaccurately.

The reflex angle subtended by the major arc AC at O is 360° - 60° - 60° = 240°. Hence (by the inscribed angle theorem) the angle subtended by that arc at B (the angle you want to find) is 240°/2, which is 120°.
Thanks from Hammad
skipjack is offline  
Reply

  My Math Forum > High School Math Forum > Geometry

Tags
problem



Thread Tools
Display Modes






Copyright © 2017 My Math Forum. All rights reserved.