Thank you so much for making all of these videos I'm taking Pre-Cal right now and honestly your videos are the reason why I have an A in the class and don't get super lost in the sauce. Thanks again you're the best!!
Thank you so much for EVERY SINGLE video you have made. You have helped me so much in my trig college course and I can't thank you enough. I wish I had you as a teacher!!
I am having to search online for help because I have one of those math teachers who give you notes on one thing and not everything and when you get to the homework the problems are different or different types. It is really frustrating and wastes so much time that I could've spent doing other homework.
You fucking rock, dude! Taking precal this semester and every time i have a doubt, i come to your channel and you set my mind at ease. Also, you sound so much nicer when teenagers aren't around lmao.
just use the original degree to see which quadrant it sits and the signs. for example cos200 , its located third quadrant which sin -, cos - and tan +. so we know the sign and then just do the rest
How are you finding or how would i know that 60 degrees (x,y) = (1/2, pi*/2 ) how do you find the x and y ? Do you have a video on explaining that ? Thank you !! I passed my last exam cause of you (log test)
awesome! yes I do it there are a couple of videos explaining that, it is all about similar triangles on the unit circle. Here is the playlist ua-cam.com/play/PL0G-Nd0V5ZMqaymBMKRLmm-VvKIEQhyQT.html
using special right triangles we can only find the exact value of sine for angles 30,45,60 and angles based off those values(multiples, add and subtract). For any other angle we will have to approximate with a calculator
Brian McLogan thanks for the feedback I really appreciate it. Last question, this I based of unit circle. How does changing the radius effect the cos and sin. Ex. 120 degree angle with 20 radius?
I am having such a hard time, actually the hardest in my entire algebra history trying to find what the radian measures o all angles who's sine is -0.9 using the calculate and then the unit circle. The unit circle is crazy difficult but I have to find why the radian measures are -1.12 + 2(pi)n and 4.26 + 2(pi)n. I HATE NOT GETTING HOW TO DO THIS o:;;;
ua-cam.com/play/PL0G-Nd0V5ZMpqCJQreDI0Q7ibZ-q8pQ8v.html ua-cam.com/play/PL0G-Nd0V5ZMqaymBMKRLmm-VvKIEQhyQT.html Here are two playlists that might help you out. The first describes angles especially radians vs degrees where as the second talks more about the unit circle. It takes time for this info to sink in. Do not worry it will eventually. Keep up the hard work
Look thank you for putting up videos helping people. I'm sorry. I'm just frustrated. I've been looking for a couple of days now online every time I look up up how to evaluate trig functions without using a calculator i keep getting videos about 30 45 60 angles. There was a time before calculators and I would just like to know how to do it without one. I think understanding that process would beneficial to understanding whats going on. Do you have any reference you can give me or some different keywords I should use that might come up in a high math? I'm sorry for getting upset. I would appreciate any information you could share. Thank you.
so back in the day , they still didn't manually evaluate those trig functions they had reference charts, yes there is a mathematical way to do it but not sure how. The fact we have been using charts and calculators for so long for those types of angles should say something about the complexity of evaluating for not 30-45-60 angles
thank you, happy to help
Thank you so much for making all of these videos I'm taking Pre-Cal right now and honestly your videos are the reason why I have an A in the class and don't get super lost in the sauce. Thanks again you're the best!!
awesome! Keep it up Kyle!
I’m studying rn and these videos are saving me from failing
Took 4 minutes to explain what my teacher couldn't in 3 hours
happy to be there for you!
Thank you so much for EVERY SINGLE video you have made. You have helped me so much in my trig college course and I can't thank you enough. I wish I had you as a teacher!!
you are very welcome!
I am having to search online for help because I have one of those math teachers who give you notes on one thing and not everything and when you get to the homework the problems are different or different types. It is really frustrating and wastes so much time that I could've spent doing other homework.
I totally didn't understand this concept at all until this video. Bravo!
+Josh Hansen happy to assist you!
You fucking rock, dude! Taking precal this semester and every time i have a doubt, i come to your channel and you set my mind at ease. Also, you sound so much nicer when teenagers aren't around lmao.
Lovely! My teacher didn't go over this part of our homework during our note session, but you helped me out big time! Thanks!
you are very welcome!
ur videos r saving my life
Thank you for these videos man you are helping me get through my pre calc class you are awesome
I love how you teach!!!!!!!!!!!!!!!!!!!!!!!!
happy to help
just use the original degree to see which quadrant it sits and the signs. for example cos200 , its located third quadrant which sin -, cos - and tan +. so we know the sign and then just do the rest
If my college had you as a professor i would just wait to add your class do you see how rare is this for a college student
Your trig is wonderful
Thank u so much best explanation
Do u have any other videos to help alevel students with Maths ???
not familar with your curriculum but I do have a lot of videos, some basic some advanced
Brian McLogan edexcel
This just saved me
Thanks a lot sir!
Sir,Why is sin of the reference angle equal to sin of the original angle?I would be very grateful if you answer sir.
Thanks a lot
Wait how did you find the coordinates at first? That’s the main problem i have that I cannot find the coordinates of x and y plz explain
You find the original 2 cords off of the unit circle
This is awesome! Thanks!
Celine Capiral you are very welcome! happy to be able to help
Thanks!
Thank u 😀😀
How are you finding or how would i know that 60 degrees (x,y) = (1/2, pi*/2 ) how do you find the x and y ? Do you have a video on explaining that ? Thank you !! I passed my last exam cause of you (log test)
awesome! yes I do it there are a couple of videos explaining that, it is all about similar triangles on the unit circle. Here is the playlist ua-cam.com/play/PL0G-Nd0V5ZMqaymBMKRLmm-VvKIEQhyQT.html
he found it by the unit circle
nice.well explained
Awesome explanation...
thank you!
Thanks so much!
what class are you teaching this to? I'm feeling anxiety about a class I'm going into and I want to know if I need to know this method well
THANK YOU SO MUCH!!! i actually feel some what smart now hahaha, wish my school taught it this way!!!!
Thank You
you are very welcome!
Is it possible to find the cos and sin using just an angle? Example 46 degrees
using special right triangles we can only find the exact value of sine for angles 30,45,60 and angles based off those values(multiples, add and subtract). For any other angle we will have to approximate with a calculator
Brian McLogan thanks for the feedback I really appreciate it.
Last question, this I based of unit circle. How does changing the radius effect the cos and sin. Ex.
120 degree angle with 20 radius?
the points would be the exact same as the ratios do not change, however you would multiple each answer by 20 as that would be your multiplier.
Why root 3
What is the reference angle?
is it 360 degrees
it's 360-θ
why are the coordinates in between quadrant 1: 1/2 and square root of 3/2? forgive me. I'm still new at this.
+assdafegkush hard to describe in a comment search my channel for how to create the unit circle or where does the unit circle come from.
+assdafegkush short form it's all about special right triangles
Mr. McLogan's Math Channel thanks for the help!
I am having such a hard time, actually the hardest in my entire algebra history trying to find what the radian measures o all angles who's sine is -0.9 using the calculate and then the unit circle. The unit circle is crazy difficult but I have to find why the radian measures are -1.12 + 2(pi)n and 4.26 + 2(pi)n. I HATE NOT GETTING HOW TO DO THIS o:;;;
ua-cam.com/play/PL0G-Nd0V5ZMpqCJQreDI0Q7ibZ-q8pQ8v.html
ua-cam.com/play/PL0G-Nd0V5ZMqaymBMKRLmm-VvKIEQhyQT.html
Here are two playlists that might help you out. The first describes angles especially radians vs degrees where as the second talks more about the unit circle. It takes time for this info to sink in. Do not worry it will eventually. Keep up the hard work
Thank you so much wise teacher :D
this tells me nothing.. if i have and angle 23 degrees how do I evaluate for sine. show that. not for angles that we are supposed to memorize.
um calculator
so one day a calculator magically fell from the sky and that's how humanity learned about trig functions?
Look thank you for putting up videos helping people. I'm sorry. I'm just frustrated. I've been looking for a couple of days now online every time I look up up how to evaluate trig functions without using a calculator i keep getting videos about 30 45 60 angles. There was a time before calculators and I would just like to know how to do it without one. I think understanding that process would beneficial to understanding whats going on. Do you have any reference you can give me or some different keywords I should use that might come up in a high math? I'm sorry for getting upset. I would appreciate any information you could share. Thank you.
so back in the day , they still didn't manually evaluate those trig functions they had reference charts, yes there is a mathematical way to do it but not sure how. The fact we have been using charts and calculators for so long for those types of angles should say something about the complexity of evaluating for not 30-45-60 angles
If you took sin( 270+30)
Lmao... 60 degree in unit circle is 1/3 of pie not 1/2 of pie
nope pi/2 is correct
420 nice
Going to quick. Slow down, we are all not as smart as you -_-