sin(10°) is irrational, classic math proof
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**note: we will find the exact value of sin(10°) by using the cubic formula**
Further readings:
De Moivre's theorem: https://brilliant.org/BPRPDeMoivres/
Rational zeros theorem, https://brilliant.org/BPRPRationalRoot/ ,
sin(3x), with angle sum formula, https://youtu.be/aSq9vwGHLTg
triple angle formula: https://brilliant.org/wiki/trigonometric-equations-triple-angle-formula/ ,
Classic question, proving sin(10 degrees) is irrational,
blackpenredpen,
math for fun,
https://twitter.com/blackpenredpen,
blackpenredpen@gmail.com ,
how to prove a number is irrational?
Видео sin(10°) is irrational, classic math proof канала blackpenredpen
first 200 people to sign up will get 20% off your subscription, and you can support my channel, too! Thank you!
**note: we will find the exact value of sin(10°) by using the cubic formula**
Further readings:
De Moivre's theorem: https://brilliant.org/BPRPDeMoivres/
Rational zeros theorem, https://brilliant.org/BPRPRationalRoot/ ,
sin(3x), with angle sum formula, https://youtu.be/aSq9vwGHLTg
triple angle formula: https://brilliant.org/wiki/trigonometric-equations-triple-angle-formula/ ,
Classic question, proving sin(10 degrees) is irrational,
blackpenredpen,
math for fun,
https://twitter.com/blackpenredpen,
blackpenredpen@gmail.com ,
how to prove a number is irrational?
Видео sin(10°) is irrational, classic math proof канала blackpenredpen
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