- #1
- 2,186
- 2,694
Homework Statement
In any triangle ABC, prove that $$a^2 b^2 c^2 \left (\sin {2A} +\sin {2B} + \sin {2C} \right) = 32 \Delta ^3$$
Here ##\Delta ## means the area of the triangle.
A problem in Trigonometry (Properties of Triangles) v3
- Thread starter Wrichik Basu
- Start date
Click For Summary
Homework Help Overview
The discussion revolves around a trigonometric identity related to triangle properties, specifically proving the equation involving the sides of a triangle and its area. The original poster presents a mathematical statement that requires proof, focusing on the relationship between the sides and angles of triangle ABC.
Discussion Character
- Exploratory, Assumption checking
Approaches and Questions Raised
- Participants discuss the validity of the proof and question the dimensional consistency of the equation presented. There are inquiries about the original poster's methods and whether they have resolved the problem independently or with external assistance.
Discussion Status
The discussion has evolved into a debate about the appropriateness of cross-posting on multiple forums. While some participants express concern over the potential waste of time for those offering help, others defend the practice as a means to gather diverse solutions. The thread has been locked, indicating that the original poster has claimed to solve the problem with help from another source.
Contextual Notes
There is a mention of a change in dimensional analysis within the problem, which raises questions about the correctness of the approach taken. The thread also reflects on the implications of seeking help across different platforms and the impact on community engagement.
In any triangle ABC, prove that $$a^2 b^2 c^2 \left (\sin {2A} +\sin {2B} + \sin {2C} \right) = 32 \Delta ^3$$
Here ##\Delta ## means the area of the triangle.
- #2
Buffu
- 851
- 147
Wrichik Basu said:
This thread is marked solved. why ? did you worked this out or you still need help ?
- #3
BvU
Science Advisor
Homework Helper
- 16,219
- 4,934
As a physicist I notice your change in dimension somewhere halfway (I can point it out if you type it, not if you post a picture...) from length6 to length3 ...
- #4
- 2,186
- 2,694
Buffu said:
I worked it out with help from another website where I posted it.
https://math.stackexchange.com/ques...em-in-trigonometry-properties-of-triangles-v2
- #5
Buffu
- 851
- 147
Wrichik Basu said:
Then it is bad of you to cross post on multiple sites.
- #6
- 2,186
- 2,694
Buffu said:
Of course I'll cross post, because previously by doing this, several times I've got several different correct ways to solve a single problem, which is interesting.
- #7
Buffu
- 851
- 147
Wrichik Basu said:
You don't realize you will waste time of people who will look at this post thinking you need help.
- #8
Drakkith
Mentor
- 23,205
- 7,687
Thread locked for moderation.
- #9
Drakkith
Mentor
- 23,205
- 7,687
Wrichik Basu said:
We can't stop you from posting on multiple forums, but unfortunately you've probably just lost the help of any of our regular homework helpers that happen to stumble across this thread or that hear about this. As Buffu said, you're mostly just wasting peoples' time.
Thread will remain locked as the problem is, obviously, solved.
Similar threads
- · Replies 7 ·
- · Replies 3 ·
- · Replies 11 ·
- · Replies 2 ·
- · Replies 12 ·
- · Replies 7 ·