Basic Trigonometric Identities: Pythagorean Identities and Cofunction Identities
189K views · Jan 8, 2018 · Education
Comments · 76
@ryanjamesfuentesconiendo4999 · 4 years ago
thanks prof dave.. you saved my 1 semester of math analysis<br>More power & GOD BLESS YOU MORE
50
@studyaccount017 · 2 years ago
came here because i misclicked from graphing functions, stayed for the pythagorean identity derivations. if this was how it was taught to me in 8th grade, i would've liked maths a bit.
22
@Alex-02 · 2 years ago
I never understood why in the US they always teach students secant, cosecant and cotangent. I feel like they are never really that useful for more advanced topics and just add more confusion for students just learning about them.
38
@Bs62025 · 1 year ago
as a 10th grader i desperately wnated to know why tf this identies are i use now i know why thank you
3
@shygirl8376 · 5 years ago
Just exactly what I was looking for. Thanks you’re the nicest Dave I know
17
@Aristos_Arete · 3 years ago
I appreciate your content, I love to learn so this is a treat for me.
4
@LittleSeasonSaints · 6 years ago
Thank you so much for this!!!
4
@Eduardo-tq5sk · 1 year ago
Thank you mr David
1
@kajalroy5708 · 6 years ago
Thank you
1
@vasu2415 · 5 years ago
Thanks
@hornet-e9g · 4 years ago
thanks prof dave
@tGoldenPhoenix · 4 years ago
Done.
Up next
Graphing Trigonometric Functions
Professor Dave Explains · 366K views
How Newton Calculated Pi in Just One Afternoon
STEM in Motion by Gaurav · 822K views
Trigonometry Concepts - Don't Memorize! Visualize!
Dennis Davis · 3.7M views
03 - Pythagorean Trig Identities, Part 1
Math and Science · 146K views
Trig Identities
The Organic Chemistry Tutor · 1.7M views
How Light Travels Without Moving: The Feynman Reality Check
Think in Physics · 256K views
Sabine Hossenfelder: More Exposed Than Ever! (Racism Edition)
Professor Dave Explains · 1.1M views
Crowd Goes WILD as Hikaru TRAPS Magnus Carlsen’s Queen
GM CHESS LESSONS · 19K views
One of the world's greatest mathematicians explains 6 essential concepts of math | Terence Tao
Big Think and Big Think Clips · 2.5M views
WITTYALIEN DEFEATS MAGNUS CARLSEN!!!!!
GothamChess · 67K views
Nobody Explained Maxwell's Equations Like THIS!
Animated Physics · 531K views
Why Does Time Stop at the SPEED OF LIGHT? Feynman's Mind-Blowing Truth
Imagine the Physics · 739K views
All the TRIG you need for calculus actually explained
Dr. Trefor Bazett · 547K views
The Explanation of Integrals I Wish I Had
DIBEOS · 180K views
(1:2) Where the Laplace Transform comes from (Arthur Mattuck, MIT)
hamsterpoop · 505K views
Nobody Explained the Schrödinger Equation Like THIS!
Animated Math and Simply Math · 313K views
How to Attack in Chess? Tal's 4 Simple Rules
Remote Chess Academy · 96K views
Trigonometry FULL Course — The One Idea That Explains Everything
Visual Math Lab · 82K views
Lesson 1 - Basic Trig Identities Involving Sin, Cos, and Tan
Math and Science · 516K views
The Easiest Way to Memorize the Trigonometric Unit Circle
Professor Dave Explains · 651K views
Memorizing Trig Identities
bwanamudzo · 107K views
Trigonometry - Cofunction identities
MySecretMathTutor · 42K views
Only Video That Will Make You BETTER at MATH - 100%
Margin · 1.4M views
Truly Understand Trigonometry
snsus · 824K views
The Last Great Mathematician
PeachPi · 427K views