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Why sin and cos don't mean anything

Simon Clark Follow
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  • 5 years ago
  • 380,754 views
  • 14,792 likes
  • 1,637 comments
Get better at maths with Brilliant: https://brilliant.org/SimonClark/

An excellent summary of this story (found after I did all the research, annoyingly!) can be found here: https://physics.info/trigonometry/

So, yes, the title is, rather than trigonometric, slightly hyperbolic. Sin and cos are a corruption of the word sinus, and so do have a lexical root and broader meaning. But the point I'm trying to make here is that there is no connection between the word sinus and what the functions actually correspond to. Any true meaning was lost in the successive translations and transliterations from sanskrit. So while sin and cos do have /a/ meaning, I guess what I'm saying is that they don't have a /meaningful/ meaning.

Also I apologise for any pronunciation mistakes in this. I'm a scientist, not a linguist! Also also yes I'm aware that there are differences between Persian (in various stages) and Arabic.

You can support the channel by donating at http://www.patreon.com/simonoxfphys

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Filmed on my Canon 80D: http://bit.ly/simonvlog80D
Editing done in Premiere. Music by ProleteR - Back Home.

Huge thanks to my supporters on Patreon: Dan Hanvey, Logan McGillivray, David Efird, Cameron Matchett, Lachlan Woods, Tim Boxall, Simon Vaes, Gabriele Mozzicato, Jawad Alalasi, Gaia Frazao Nery, Kodzo, Josh Ruby, Claire Anthony, Eve Dillon, Rowan Gow, Matthias Loos, James Bridges, James Craig, Angela, Sanaa Al Derei, Mark Anthony Magro, Liam, Theresa Wang, Hunter Jones, Nathan Smith, Kieran Kelly, Kendra Johnson, Wendover Productions, Caitlin Louise, Real Engineering, Rhys Rickard-Frost, and Katy P.

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I am Simon, a PhD candidate at the University of Exeter who's about to sit his viva. I upload videos on bits of science which are relevant to what I do, and sometimes just because they're really cool.

Vlogs from Oxford students - http://www.youtube.com/oxvlog
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