I try to deliver fast-paced easy-to-understand educational videos with animations and outlines.
My goal is to make each video worth your time by delivering meaningful and helpful content in less time than you might find elsewhere or in school lectures.
I still work full time so I'm not really a fast content creator. When I finish up Trigonometry, I'll take a break and start a Probability and Statistics series.
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Excellent teaching here... definately a fan
Many people are missing out on this series.
Yes I'm afraid not many people are being helped.
I'm doing a coding school project with perspective projection and wirh this video I feel the first time it's realistic to understand the math in a reasonable amount of time, thanks
this series is so good, thanks a lot , the animation is brilliant
can you please be in charge of writing all math books for eternity you just explained the basic bits of trig in like less than five minutes and I understand them for the first time of my life having flunk the class three times I swear to God thank you thank you thank you
My childhood fear of trig has just been erased, and I am 50 years old. Thank you!
This is awesome. Answers everything. Thank You ❤
Tiignometri is very Hard chapter, Thanks for making it hard to conventional
i learned Sin, Cos, Tan as Sally Can Tell... Oscar (opposite) Has(hypotenuse) A(adjacent) Harry(hypotenuse) Old(opposite) A$$(adjacent)
Wow this is amazing, thanks!!
Wonderful course! Thank you for creating this!
i cant thank you enough for your videos , you saved me from failing
In my line of work, there is no maths at all - I look down a microscope at tissues to make a diagnosis ! But I want to learn maths again because there is this niggling (and unhappy) feeling that I never really understood maths conceptually in school - chanced upon this - or rather the algorithm led me to ... thank you for the time and effort you have put in for making Trigonometry accessible to anyone who is interested. Beautiful videos and presentations - I want to sit with a notebook and take notes as I go along - just as I would have way back when in school.
thank you
This makes me wanna fight my teachers. IT WAS THIS SIMPLE THE WHOLE TIME!? WTF WERE THEY EVEN TEACHING US??
You just save me a ton of time for studying!! i am a "figure out" person, i cant just "memorize" things and take them as "face value" there must be a REASON for them, and you just prove it!! Thanks!!!!
u r A legend u deserve to be in harvard jfnagvnsf dfgf sdg ilove u
I love you sir.
Dennis Davis, the goat 🐐
4:35 Paper cutter to you, guillotine to me (Romanian language). I don’t know what hurts more- to be one head shorter or a finger paper cut. It’s violent imagery. Words evoke sensations.
2:56 Why is the blue one ‘more’ adjacent than the yellow one? 🤔 You like blue, don’t you? The blue one is the right hand, the yellow is the left. From whose perspective? The perspective. The angle. I see a constellation there. Or a star called a mythical Hero (🙄 morning to you, too) with two open arms. What does he do? He opens his arms. Are the blue and yellow ones forces? Is the red one a result of something? He might hold a shield, in which case we see the shield from above like a line. Which is a curve, really, but seen from very far (obviously, because I am looking at a constellation). Etc. I am not taking the piss- this is how I genuinely think. 🤷🏻♀️
Yes I see what you mean, but the "hypotenuse" side was already labeled, so what's left is "adjacent". Not perfect, but it seems to be effective.
@@DennisDavisEdu Whatever works for you.
2:16 Oh, look! 🇷🇴 (Say hello to the SRI guys for me. Buna dimineata).
2:00 😱 You cross the line here, Mister. Are you a French who cannot stand royal blood women? (Just kidding. Kinda 😁).
Lol, all these years I hear the word triangle and I'm like yea, that's a thing. Never pieced together tri...and angle....dear lord...
😁
why isn't tan value always 1?
Since tan = sin/cos, it's 1 where sin=cos which is at π/4, 5π/4 and their coterminal angles.
وينك من زمان يا زلمة
العمل على فيديو حساب التفاضل والتكامل الطويل. يونيو المستحق آمل. ربما يوليو. فيديو طويل جدا.
@@DennisDavisEdu Oh u replied 😉 I meant that I wish I had watched the video sooner but it's not too late It was really helpful thanks so much 😃 I pray to God that you revert to Islam
Thank you for your kind intentions. I am safely in the grasp of Jesus. John 10:28-29
6:50 - I'm not exactly sure how you derived cos(theta/2) as 2 sides for the two right triangles within the isosceles. I understand why the entire isosceles hypotenuse side is equal to 2cos(theta/2), But since you divided the isosceles into two right angles, the formula used for either should be ADJ_SIDE = hypotenuse*cos(theta/2). or 1 * cos(theta/2). specifically because the side solved for is adjacent to <theta/2 (The opposite side is disregarded since this is only proof for half-angle identities). If you are able to respond and provide any clarity, that would be great. Your videos are amazing!
Thanks Brandon. I want to be helpful, but I'm not sure I understand where we're disconnected. We agree that the hypotenuse of the big gray triangle is 2cos(θ/2). So each half must be cos(θ/2), and you correctly state the formula used for this: ADJ_SIDE = hypotenuse*cos(θ/2). So it sounds like we both nailed it and that's why I'm not sure what your question is. I'll try again if you clarify, but it sounds to me like you got it.
Thanks it changed my life
H = 6.109
I guess I imagined a very large paper cutter 😂
denis you are beyond any praising word. ❤❤❤❤💯💯💯💯💯💯
I was cursed with such bad math teachers. I did 5x more work than I had to.
Why am I so dumb 😭?
i wish i had a teacher like you when i was in school
Extraordinary! Thanks a lot Dennis Davis for this series. Well and beautifully explained, that makes it twice as good.
Thank you so much, there is no analogy on Russian language
Absolutely exhilarating, Dennis. Thank you! Now to go back to the beginning of this video and integrate all of its riches - but first: a good night's sleep.
Brilliant.
Very generous of you to make this series, and to make it free. Your colourful graphics have helped me to understand what before I just accepted, and I have learned new things along the way. Truly enlightening. Bless you.
This video has almost 3 million views, Dennis Davis should have almost 3 million subscribers imo!
Yes I think so too!
You take me back to Brooklyn Tech 56 years ago. Thanks for your excellence.
I know this sounds pathetic, but I shed a little tear when I finally understood how to find these hypotenuses in space. Using your tutorials, I built a little model out of paper, a match and some wire so that I could see what you are explaining in three actual dimensions. It all fell into place and in that moment I could feel myself falling in love with the Pythagorean Theorem. Thank you Dennis. A thousand thanks!
That sounds like the makings of its own tutorial video! Thanks for watching and best wishes with your learning.
i love you
Absolutely brilliant teaching. Also, visit the trig videos - the best trig teaching I have seen. Keep up the good work.
And please create the calculus series from the engineering POV.
Hey denis brother, please create a full blown playlist on calculus. Like you have created on Trignometry. You are such GEM💯❤.
I'm so loving this! Thank you, Dennis!
Another wonderful set of revision questions. SOOO EXCITING!! Thank you, Dennis!
I love these tutorials so much - and with respect to @mac866, I have to say that I love your voice very much. I find the speed with which you speak (not too fast) and your gently inflected tone very calming. Different strokes for different folks, I guess!