User talk:Aabatista

Welcome
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 * --Your friendly ProofWiki WelcomeBot 21:40, 12 October 2012 (UTC)

Trigonometric formulas
I can see what you're trying to do, but you might want to experiment a bit in your sandbox before you start making edits to live code, specially as you still seem unfamiliar with the workings of the MediaWiki software package.

You are encouraged to experiment in the page User:Aabatista/Sandbox where you can work out how all these things work.

Note that the first of your product formulas already exists as Euler Formula for Sine Function. It is not intended that this be included in Trigonometrical Identities which is for formulas derived from the trig functions, not those for creating trig functions out of infinite series.

Feel free to spend time reading random proofs, to get a feel for how this site works. --prime mover (talk) 22:24, 12 October 2012 (UTC)

Thanks for the pointer. I am trying to get used to the editing of the wiki. But it is confusing. I took some formulas from wikipedia/mathworld that I'd like to see the proof for. They are just stated there. I put them in the link below. The second statement follows from the first. http://www.proofwiki.org/wiki/Product_Formulas_for_Sine_and_Cosine#Theorem

There seems to be no name for these formulas though. They are not referenced either in G & R.