Talk:4 Sine Pi over 10 by Cosine Pi over 5

About Proof 2
I saw a proof under "4" in the Proven Results category and thought it was a very nice and concise proof. I discovered that if simpler tactics were used, it would take a lot longer, but this other proof's purpose is to show that it can be approached through a verification and an identification. Oftentimes, mathematics classes ask for verification proofs. As well as that, this is my first contribution, and I wanted to start with something of my own.

I mentioned in the revision history that it is original work and based off of another proof of a different statement that I had written prior. That was a proof that $\cos \dfrac \pi 5 = \dfrac { 1 + \sqrt 5 } 4$; remnants of that old (unpublished and trivial) proof are still visible in this one, in the form of $\dfrac { 1 + \sqrt 5 } 4$ seen in the final section.

LegendoftheGoldenAges 06:27, 3 October 3 2018 (UTC)


 * A true labour of love. I will need to refactor this so it is in our usual format.


 * If you want to post up that "old unpublished and trivial proof" then feel free. We do not discriminate between "trivial" and "profound" -- all proofs are welcome, as we have found that a wide variety of approaches and techniques helps better to lend an appreciation for the true nature of the interlinking of the various mathematical fields, and help one grok the subject in a holistic manner. --prime mover (talk) 04:12, 3 October 2018 (EDT)