Intro to trig with a lurking mystery about cos(x)^2
Full playlist:    • Lockdown math  
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Thanks to these viewers for their contributions to translations
Hebrew: Omer Tuchfeld

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Contents:
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

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