Homework Help: A problem in Trigonometry (Properties of Triangles) v3

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1. May 12, 2017

Wrichik Basu

1. The problem statement, all variables and given/known data

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. Relevant equations

3. The attempt at a solution

2. May 12, 2017

Buffu

This thread is marked solved. why ? did you worked this out or you still need help ?

3. May 12, 2017

BvU

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. May 12, 2017

Wrichik Basu

5. May 12, 2017

Buffu

6. May 12, 2017

Wrichik Basu

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. May 12, 2017

Buffu

You don't realise you will waste time of people who will look at this post thinking you need help.

8. May 12, 2017