My Math Forum  

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

Trigonometry Trigonometry Math Forum


Reply
 
LinkBack Thread Tools Display Modes
June 3rd, 2018, 04:31 AM   #11
Senior Member
 
happy21's Avatar
 
Joined: Jan 2012

Posts: 113
Thanks: 2

Quote:
Originally Posted by skipjack View Post
The question specifies a circle with AD as diameter. That circle is the circumcircle of triangle AEF, not triangle ABC.

As AD is a diameter of the circumcircle of triangle AEF, AD = EF/sin A is a consequence of the sine rule.

In the diagram below, the circumcircle of triangle ABC isn't shown, but its radius is R.
Attachment 9736
But $\displaystyle \Delta $ = area of $\triangle$ ABC..??

Last edited by skipjack; July 23rd, 2018 at 01:09 PM.
happy21 is offline  
 
July 23rd, 2018, 01:07 PM   #12
Global Moderator
 
Joined: Dec 2006

Posts: 19,702
Thanks: 1804

I'm not sure what you meant by "It", but R is the circumradius of triangle ABC in the correct interpretation of the question.
skipjack is offline  
Reply

  My Math Forum > High School Math Forum > Trigonometry

Tags
property, triangle



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Property of z if WWRtelescoping Complex Analysis 2 January 27th, 2014 03:38 AM
Max area of a rectangle triangle with property usermind Calculus 2 May 27th, 2012 03:43 PM
A c.d.f. property Tensor Field Advanced Statistics 1 February 11th, 2011 01:42 PM
Need help to prove a property of a triangle sameapple Algebra 2 September 27th, 2009 05:00 AM





Copyright © 2018 My Math Forum. All rights reserved.