05 - Sine and Cosine - Definition & Meaning - Part 1 - What is Sin(x) & Cos(x) ?

[etcetera]

If I had you as my math teacher in high school, my life would have gone to a different direction. Clear & Simple.

[MrLabrat]

I'm 65 and taking college trig right now. I haven't done any trig for almost 50 years and these videos are like a breath of fresh air. I learn something better if I know the why and not just the how.

[financialservicesprofessio]

Dear Teacher, I am writing to inform you that for the first time in my life (I'm 55 years old), I have finally understood the Trig functions concept. I have read a million times, over the years that the angle sin0 is Opp/Hyp, but I have never understood what the heck everyone was talking about until I watched this videos. Everything fits into place for me now. Why am I even watching this video at the age of 55? Well, my daughter is struggling with this concept as well. I wanted to revisit the topic and see if I could help her. I am glad I found you. Over the years that I have watched your videos, I think you are the most effective teacher I have ever seen. The concept of "chopping factor" is a miracle. Concept this simple, I don't know why the teachers can't really explain it clearly to their students. Could it be that they themselves are just repeating what they memorized, without any understanding?

[skillybiskuit]

I almost didn’t graduate high school because of math. I slipped behind once and never caught up again. Fast forward, I’m 22 and I’ve decided to spontaneously pursue physics. I watch your videos religiously. I didn’t realize how highly intelligent I could be with the correct teacher. Your work is very much appreciated thank you for your quality and dedication

[halbertthomas]

I'm a happy 75 year old. Thought I was math-hopeless. I got this lecture totally. Wish I seen this 50 years ago.

[tomd]

I’m pretty sure most observers feel that they would have had not only a better understanding of the subject, but, also would have enjoyed the lesson and presentation.
This gentleman was born to teach.
Humble and erudite..Bravo!

[claudeelliott]

I'm a mostly happy 88 year old who had major problems with math in high school. You, sir, broke through a lot of ancient haze tonight for which I'm grateful since I can "assume" that maybe I'm not as dumb as I thought ! Thank you for your patience and clarity in explaining sin and cosine.

[joseuzcategui]

This is the best lesson on sine and cosine I have ever seen. I've been using them for years. I really wish that I had a teacher like you back in high school. Congratulations!
Our world can definitely use more people like you. Keep up the outstanding work.

[platoeuclid]

As a fellow math teacher, I can say that this is an excellent video as he does a great job of explaining the ‘WHY’ of the data. Well done.

[geekmafia]

This world needs teachers like you. You are just diamond. Thank you very much for your knowledge for your passion for your time.

[thcm]

I'm in 8th grade preparing for next year and you are somehow able to convey these concepts to me perfectly. Thank you.

[RolandBoike]

You taught me to really understand something something that i have known for 94 years. Thanks

[charlietrece]

If a man keeps me interested over 40 minutes in something that I have no idea what’s he’s talking about it’s because the man knows what’s he’s talking about and suddenly trigonometry feels right. My respects to this teacher.

[deirdreberger]

This is amazing. You are a very talented teacher. Your dedication and passion shows in the high quality of your work.

[fromexoplanet]

Amazing content every single second was full of important information and it was so well explained!! Thank you for uploading these lectures for free💖

[wondergames]

If everyone had a teacher like you we'd be living in a much better world

[gordonclark]

I was intrigued and now wish I had this understanding 45 years ago when I was in school.

[cholan]

With access to this high quality of educational content online, poor third world like where I live might finally get a chance to compete. Thanks mate.

[simpson]

OMG, after watching many, and I mean many videos and textbook reading this is the absolute best resource I have come across. Wow, great If you need Trig please watch this video. Its long but you will have a better understanding then anyone in the class. TRUST

[Kerrsartisticgifts]

When I was a kid in Glasgow, I was sent to Secondary school a year and some months early. I was put into "Prep A" and I was taking math, chemistry and physics as well as the usual classes, English, Art and Music. I was put into a course with a few other kids, called "New Math" . The only problem was major. I had never heard of anyone being sent "ahead" so I took it as rejection and thought my teachers did it to be rid of me, because I was the boy with the problem, I asked too many questions. I was also from a poor working class family and had to leave school to work at the earliest opportunity. I knew that but my teachers didn't.
I had to leave at 15 yrs and I went to work 6 days a week and gave my wages to my mother. I was the sole support for my mother, myself and two brothers at 15 years old.
I am 69 now and still read educational and scientific materials all day, every day. I wish I could sit in on university lectures and just learn