Intro to Trigonometric Functions (1 of 2: Angles of any magnitude)

[luoana]

I wish you were my teacher. Lessons would be very entertaining

[veks]

Even though I already studied the basics of Trigonometric functions not even a month ago, it'll definitely come in handy at some point. I love watching your lessons because of the way you present and teach them. It just makes me want to learn even more and more. Good job Sir! Your work is much appreciated!

[mogoleserogole]

Mr Woo, your enthusiasm for mathematics is absolutely contagious! I can never thank you enough for your very engaging and easy to follow presentations. I'd definitely recommend your material to any maths student or enthusiast sir, you're absolutely brilliant! Greetings from South Africa.

[fitzwilliamlokiec]

You could never ever understand how helpful you are. You are literally saving my whole life. You are the goat!!!

[Rant.t]

"it's easier to draw a big circle than a small circle"

Kid : *dots paper*

[mhyr]

sir, you did something that my teacher couldn't do in 90 minutes in 9 minutes..thank you soooo much!!!

[youcanteachthem]

Hello Mr. Eddie
You have reached many parts of the world with your videos and have helped so many people. Thank you would obviously be a little understatement :)

It really brings tears of joy to my eyes to see how a person can touch upon many lives when I go through some of the comments underneath each of your videos. I may be older but I do look up to you when it comes to teaching mathematics.

I teach lower grades, but I love maths and I watch your videos to further my knowledge and skills.

Though, I may not have a hundredth of your teaching and maths knowledge, I do share one thing, for sure, with you, which is the positive energy and the passion for what you do.

Love and respect from Egypt :)

I still have a question that I would like to ask, though :)

My question would be:

Sine of any angle that is a multiple of 45 degrees would always assume 1/sqrt2. However, not all the y-coordinates of those angles will assume a positive value. My brain finds it hard to connect the idea of finding the y-coordinates using the sine function.



Any help would be much appreciated (anyone!) :)

[westleyvandenwalt]

thank you Mr Eddie Woo
Hi from South Africa!

[preparationwithkeshav]

you are a great teacher!
you make everything so simple to learn,
thank u sir

[yoavshati]

I love the way you're explaining these things
I already know a big part of what you're teaching, and even a bigger part of Israel's lazy curriculum (no induction proof and oblique asymptotes, and probably some other stuff in calculus), but your videos are too interesting not to watch
My favorite videos of yours are about e^i(pi)-1=0. I watched so many videos on it without understanding it fully, and you just explained the whole thing in about a hour (maybe), while also explaining imaginary numbers and Taylor series from zero
You're awesome

[zummyizhere]

I finally get it now, thank you so much you're such an amazing teacher!

[Louis-irsy]

My teacher taught us this but I wasn't really paying attention so thanks boss

[kiwifruitwonders]

Lol can imagine someones come back being,
"Yeah but does your teacher have a million subs?'

[anirg]

Great! It was nice one.. I could not imagine trigonometry as the sense which you told..
Really Mathematics is the sense we never knew we had!👏

[DgvRgc]

Hello Mr. Eddie I have a question. Why we use only 0°, 30°, 60°, 45°, 90°, in trigonometric table not the other numbers like 23°, 61° 76°etc. please tell me right now

[nature_through_my_lens]

If I had a teacher like you in my school days, I would have been in NASA right now.

[uwu_]

I'm seeing videos of my teacher's favorite teacher.

[Notyouranalyst]

Sir....I love ur teaching sir....we need u to take more concepts of maths and physics too please sir ....pls

[johnryder]

All the most important things in one short video, where would you get it?

[watermelonmanied]

Why, when I put sin45 into my calculator do I get 0.8509...? I'm lost from the get-go