Graphing Sine & Cosine w/out a Calculator Pt 2

I introduce the transformations you can apply to the six trigonomtric functions. I then go over two basic examples of graphing sine with using t-tables. Part 2 will be two more examples of graphing sine & cosine with more transformations using a t-table.

[profrobbob]

Only 511 more videos to Close Caption!!!  

[raultorres]

You just saved my life. I wish you were my professor. You have no idea how much I would like to thank you. Thank you for teaching. 

[kiyahcarter]

OMG this helped me understand so much!! This was way better than the Khan Academy video (which was not helpful at all).  Thank you!

[FunnyProductions]

Gave me a greater understanding right in time for my test tomorrow. Thank you!!!

[profrobbob]

And "thank you" for liking my videos and choosing my channel to learn from!
Keep watching and sharing:D

[profrobbob]

You are absolutely correct that you will start your t-table at 0 and count by 1/2. Don't forget that pi is in your equation, so when you plug in...say 3/2 for x you will finding 1/2sin(3pi/2) which will give you a y value of -1/2. I don't know why your answer key has 2pi and 4pi on the number line unless they use the same standard x-axis for all the graphs so you can see the effects of the phase shift easier.

[profrobbob]

Selena, a comment can never be too long when it is full of praises like yours! Most teachers work hard to do the best job we can and it's always nice to hear when a student like yourself realizes our efforts. This is one of my early videos when I had a 15 min time limit. My newer ones are longer but I try to break them out into chapters so you can just watch what you need (and there's always the FF button). Do what you can to "Tell the World" about my channel and help me groW! THANK YOU:)

[profrobbob]

I LOVE to hear those comments...but remember, "it takes two"...if you had not taken the initiative to get outside help in the first place...you may not have found my channel...and YOU were the one that made that A happen, with a little help from me:)...I'll be happy to take that much credit. Don't keep my channel a secret...please share with your friends and help me grow!...thanks.

[profrobbob]

What do you mean?..you do have me as a teacher...anytime of the day or night!!!...and thanks for subscribing too! Great to hear that you didn't just "give up" on your education. You were motivated enough to seek out the additional help you needed in order to "get the grade" and that my friend, is very commendable!!! Keep the positive, "push through it" attitude about life, and you will go far. Keep watching and learning, you can NEVER have TOO MUCH knowledge:))

[profrobbob]

Your example would be a little tricky but could be done with my method...make the leading coefficient 1/10. I am teaching 4 subjects at this time with no planning period. So, I agree I have a couple of holes in my trig videos I am currently focused on doing Geometry videos for my new class that I am teaching this year. I wish I could make these videos faster:/ I do want to eventually work into the harder classes. It will not be until the end of this school year though.

[profrobbob]

THANK YOU Sam...I take that as quite the compliment! My wife and I dream of one day having a "M" next to my subscriber #! Just keep telling all your friends about my channel and don't forget to tell them to like and subscribe and if everyone who likes my channel does the same, those views will groW. Thanks for supporting:)

[profrobbob]

I am sorry. I am teaching calculus live for the first time next school year so I am focusing just on preparing for that class...and doing a couple of short maintence videos to fix minor errors needed in my existing videos. It is fantastic that you prepare before your classes. I wish more of my students did that.

[profrobbob]

And THANK YOU for that extraordinary analogy! I hope you continue to watch and impress your teacher and your classmate with the information the "you" took the time to seek out and learn:) I hope you will continue to watch and learn and share my channel with others who may find it helpful...my growth comes from satisfied viewers like you spreading the word:D

[profrobbob]

I'm happy to hear you found my channel so useful...it can only make a difference when YOU take the time to seek extra help!...in this case it looks like we both benefited, you found help and I got a new subscriber!!!...Thank you for your support and I hope you can continue to learn from my channel now that you found it:)

[profrobbob]

You are welcome...and thank you for watching 10 of my videos on a Sunday:)) If viewers like you keep spreading the word about my channel I COULD be watched in EVERY high I have a few teachers to date that use my videos as study aids for their students. So BAM!!!...go spread the word and subscribe:D...thanks again.

[profrobbob]

Like I just said to another subscriber...we teachers all have a different teaching styles and some students just connect better with others..always try to find something positive from your teachers lessons...and know that you can seek more help if you need it. I hope you do great on your test...and don't forget...I'm just a click away:)

[profrobbob]

sin(pi) is = 0, if you do not get this answer your calculator is probably in degree mode. You should also be doing these problems without the use of a calculator to practice your fraction skills and your memorization of the unit circle. Thank you for watching:)

[profrobbob]

You may want to watch my videos about setting up the unit circle. Cosine(theta)=x/r and Sine(theta)=y/r, so on the unit circle where r is held at a constant value of 1 the x coordinate is cosine and the y coordinate is the sine. I hope this answers your question and thank you for watching:)

[profrobbob]

Thanks for the comment of excitement:) I'm glad you picked my video to watch and learn from...my goal is to "make math fun" one student at a time! Don't forget, anytime you want me to be your teacher you can just click on my channel and watch another lesson:)...and good luck on that test!!!

[profrobbob]

I swear you just put a giant smile on my face with that comment! I'm glad you found my channel and subscribed and are learning to love math again:) I will continue to look forward to updated comments on my quest to "make math fun" while being your youtube teacher:D...Thank you youtube