#unitcircle — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #unitcircle, aggregated by home.social.
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Finding Values on the Unit Circle! (Sine, cosine) #maths #calculus #unitcircle #trigonometry
A quick way to find values on the unit circle in the first quadrant!In this video I show how to sketch the values corresponding to 0, pi/6, pi/4, pi/3, and pi/2 on the unit circle.Using those values I show how to evaluate sine and cosine.This is useful info for those of you in precalculus or calculus!
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Just released: Trigonometry Basics Cheat Sheet by dontwanttofail
Download it free at http://www.cheatography.com/dontwanttofail/cheat-sheets/trigonometry-basics/?utm_source=mastodon
@cheatsheets #CheatSheet #CheatSheets #math #trigonometry #unitcircle #pythagoreantheory #sin- #cos- #tan- #csc- #sec- #cot- #radiansanddegrees
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This is a short, animated visual proof demonstrating Jordan’s inequality, which is an equality providing upper and lower bounds for the sine function over the interval [0, pi/2].
Jordan’s Inequality Visual Proof
#Theorem #VisualProof #Algebra #animation #circle #inequality #jordanInequality #Math #MathematicalVisualProofs #Mathematics #nowWatching #unitCircle #YouTube
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Seen on TBBBS:
1. Consider a random #polynomial with degree "n"
\[
P(z) = a_n z^n + ... + a_1 z + a_0
\]where the coefficients are random complex Gaussian numbers.
Choose the degree "n" large.
2. Compute the #complex roots and plot them.
3. Wonder why they concentrate on the #UnitCircle
From here:
