Intro to trig with a lurking mystery about cos(x)^2
Full playlist: https://www.youtube.com/playlist?list=PLZHQObOWTQDP5CVelJJ1bNDouqrAhVPev
Home page: https://www.3blue1brown.com
Brought to you by you: https://3b1b.co/ldm-thanks
Introduction – 0:00
Q1 Graph of (cos θ)² – 2:14
Q2 Translations of cos θ to (cos θ)² – 5:34
Q3 f(2x) = f(x)² – 10:54
Intro to Trig – 13:14
Q4 sin(3) & cos(3) – 16:44
SohCahToa – 20:44
Q5 Leaning Tower – 22:29
How to Compute Trig Functions? – 30:59
Q6 sin(π/6) – 33:34
Q7 cos(π/6) – 36:19
Q8 Trig of -θ – 43:34
Computing Trig Functions – 47:44
Q9 cos(π/12) – 0:49:54
Adv Trig Functions – 0:56:44
Q10 Graph of tan(θ) – 1:00:30
JSON comment – 1:02:24
“The most exciting part of the lecture” –1:05:34
The live question setup with stats on-screen is powered by Itempool.
The graphing calculator used here is Desmos.
Curious about other animations?
Music by Vincent Rubinetti.
Download the music on Bandcamp:
Stream the music on Spotify:
If you want to contribute translated subtitles or to help review those that have already been made by others and need approval, you can click the gear icon in the video and go to subtitles/cc, then "add subtitles/cc". I really appreciate those who do this, as it helps make the lessons accessible to more people.
3blue1brown is a channel about animating math, in all senses of the word animate. And you know the drill with YouTube, if you want to stay posted on new videos, subscribe: http://3b1b.co/subscribe
Various social media stuffs:
We are sorry that this post was not useful for you!
Help us improve our content!
Tell us if mBlip should continue to feature this YouTuber's content.