basically what Kristian Brasel is saying..."hey guy taking the time to make a nice tutorial to help others for free. I feel like complaining" =/ Kuddos for Sick Puppies in the background :)
Justin Burton it would be a nice tutorial if there wasnt music blaring in the background. it makes it hard to focus. I am just trying to give some constructive criticizm. quite a few people agreed with me.
im not trying to troll the guy, just let him know. he could have just as easily made the video with no music, and if he makes another one (which people on youtube tend to do) than maybe he will take the criticism and make a much more pleasant video next time. his video got a good amount of views, people make decent money off of youtube, if that is his intention than i would think he would welcome any constructive criticism people have to offer. plus, even if he made the video just to help other people than you would think he would actually care to know how he could make it better. you guys are acting like i just insulted the guy, if you cant take criticism than you shouldnt be on youtube.
If you want to know how to get exact values for larger angles/radians check out my other video where I explain ruclips.net/video/lpss5t7Vx44/видео.html
No joke, I have a midterm and I've missed so many classes, and haven't taken trig in 10 years. I've been teaching myself online for the exam for 5+ hours. This 6 minutes video did more for me than ANYTHING I've looked out. You're seriously the man.
Omg! Thank you so much! Unlike every other tutorial I've seen, yours was the simplest and clearest! Everyone else's was just so confusing ! Yours is the best. Though your music is a bit distracting but it saved my life. I should have noticed this sooner!
For *bigger* numbers, (120°, 135°, 150°, 180°), the trick still works, but *for sin*, for every angle, instead of 0, 1, 2, 3, 4 like in the video, count down from 4 to 3 to 2 to 1 back to 0. So, if sin90 is sqrt4/2, sin120 will be sqrt3/2, sin135 = sqrt2/2.... so on. *For cos*, you have to count up, so from 4, 3, 2, 1, 0 in the video, for every angle, it goes from 1 to 2 to 3 to 4, but add negative (-) in front. So say cos90 = 0, then cos120 = -sqrt1/2, or -1/2, cos135 = -sqrt2/2, cos150 = -sqrt3/2.... so on.
Use the concept of reference angles; since 330's in quadrant 4, you subtract it from 360. (360-330 = 30). Use the sin/cos values of 30 but change the signs and since the angle is in QIV then it's y-values (sin) are negative. Sin30 is 1/2 and sin 330 is -1/2. The same goes for other reference angles
holy, this is a life saver...up to this point I only knew how to get common angles between 30 and 60 without memorizing stuff! Now I know how to get 90 and 0 as well !!! And I just realized I can get 180 by negating the exact values!!! Thanks man.
You explain it better than the teachers. All I could find was "This is what it is because it is." None of them ever really "Explain it." Good job, dude.
I HAVE A TRIG AND ALGEBRA FINAL TOMORROW I SPENT SO MUCH MONEY FOR THIS CLASS I AM SOLID WITH THE ALGEBRA BUT A BIT UNSURE WHEN IT COMES TO THE TRIG STUFF THIS HERE IS CHANGING MY LIFE I LOVE YOU SO MUCH I WILL SCK YO' DCK FO' FREE.
@kiojose Sorry for the lack of reply but as a college student I don't have a lot of time in my hands, but to answer your question there are several ways to figure it out, but the easiest and using the "trick" above would have to be using your imagination, first subtract increments of 360 to 1200 until we get it to a value below 360. So if you subtract 360 3 times your left with 120 degrees. Then we picture the unit circle in our mind, we know that in quadrant 2(between 90 and 180) the value 120
This helped SO much. My exam board don't want the values rationalised, but with this method, only sin45 and cos45 need to be rationalised and it is REALLY easy.
You helped so much! This method is genius! I would've never been able to memorize the 30,60,90 and 45,45,90 triangles! You don't need to even know them without this amazing method! Thank you!
@comeon7894 I should have explained reference angles in the video because I get a lot of these questions on my inbox lol, ok for sin(240) we first find the reference angle, 240 is the same as 60 degrees except that its in quadrant 3(picture the unit circleit in your head ), so we use the trick for sin(60)and we get [sqrt3/2] but since sine is negative in quadrant 3 that answer is [-sqrt3/2]
don't worry i can relate, I've been out for the same amount of time and its hard to remember the old stuff , well i don't know what other stuff are in the ASVAB but i heard its not that difficult, and ive been really busy lately :( i will try to get back to youtube videos as soon as possible and just a tip if all else fails when factoring always go to the quadratic formule :) goodluck!!
What level of Math are most of you taking? Thinking about making a series for a specific Math class, otherwise I will upload transmission line theory videos haha.
+RelearnMath IM in Trig Honors for high school. Thanks for the simple method really helped, especially knowing that my teacher is to stuck to teach up lol. These lessons would really help me out!
Sin is a measure of how much perpendicular two objects are. Hence sin(90)=1. Cos is a measure of how much parallel two objects are Hence cos(0)=1. Sin comes into picture when two things produce maximum effect working against each other. Cos comes into picture when two things produce maximum effect working parallel to each other. There are videos dedicated to trignometry on my channel if you. Actually also have a book written on such topics. Binnoy
Thank you so much for this trick. I wish professor's would learn tricks like this. If you can keep the paper in one place, it would greatly help the future viewer. Thanks again.
I don't care about the distracting hardcore rock in the back, the random black dots all over the paper, or even the crappy editing; THIS VIDEO IS PERFECT
Hi RelearnMath, I suggest u next time u should turn off the music because it makes me (and probably some other people) get distracted a lot because I tried to listen to what you are trying to say.
so therefore, If I was evaluating 65 degrees multiplied by sine I would get 3 1/6, since there are six 5's from 60 to 90 and 60sine is equal to 3 and 90sine is equal to 4. I'm stuck on evaluating Tan65 degrees so I could use some help. Cheers!
Nice keep it up man, you foundation will make things easier in the future if your good at geometry and algebra and really understand the concepts behind the math then more advanced classes will become easier, I learned this the hard way.
I am trying to compute pi and unfortunately, i can't compute the sine of numbers like 9*10^(-8). Could you teach another trick for numbers less than 1? If possible, of course. ;) Nice video, by the way!
hey, would it still work if we continued using angle measures from the unit circle? For example, instead of just going from 0 to 4, we could go to like, 0 to 10, with the correct corresponding angle measures from the unit circle of course. let me know, thanks :)
This is awesome! One issue though... What if you have an angle greater than 90 degrees? Can you still use that basic set up but use the coterminal angle? For example, a question on my assignment says: "Find the exact value of sin(1290*)" How would I go about that using this method? I would love a video over that!! Thank you :)
I'm having trouble with identities, half angles, double angles and of course inverse functions. If you have any tips or tricks that will help I'd appreciate it. Thank you Iris
FOR AN ANIMATED VERSION OF THIS VIDEO PLEASE CHECK OUT
ruclips.net/video/_KaZWu5OKag/видео.html
The music in the background is really annoying when you are trying to learn something.
basically what Kristian Brasel is saying..."hey guy taking the time to make a nice tutorial to help others for free. I feel like complaining" =/ Kuddos for Sick Puppies in the background :)
Justin Burton it would be a nice tutorial if there wasnt music blaring in the background. it makes it hard to focus. I am just trying to give some constructive criticizm. quite a few people agreed with me.
kristian brasel Yeah but he is giving his time to us so i really did not mind. he is better than my teacher thats for sure
im not trying to troll the guy, just let him know. he could have just as easily made the video with no music, and if he makes another one (which people on youtube tend to do) than maybe he will take the criticism and make a much more pleasant video next time.
his video got a good amount of views, people make decent money off of youtube, if that is his intention than i would think he would welcome any constructive criticism people have to offer.
plus, even if he made the video just to help other people than you would think he would actually care to know how he could make it better.
you guys are acting like i just insulted the guy, if you cant take criticism than you shouldnt be on youtube.
kristian brasel i found it distracting at first but when he started teaching the trick I didn't notice it anymore.
If you want to know how to get exact values for larger angles/radians check out my other video where I explain
ruclips.net/video/lpss5t7Vx44/видео.html
can you make a video regarding to find tan,cos,sin of no. like 23,45,67,46 irregular and exact
aditya singh yes , video is coming soon!
thanks for your grear job there is no one who can teach me I am an orphan thanks for your help
turn the music off please
True. Background music should support the presentation, not distract it :P
Really yar
Sorry! I animated the video and made it better!
I CAN HONESTLY CANT THANK YOU ENOUGH SIR! MASSIVE RESPECT FOR U! U SAVED MY LIFE
lol how saved ur life?:-))
LOL
Stanciu Larisa you will understand how....... when its ur test tomorrow and u cant even remember anything cause its so complicated
No joke, I have a midterm and I've missed so many classes, and haven't taken trig in 10 years. I've been teaching myself online for the exam for 5+ hours. This 6 minutes video did more for me than ANYTHING I've looked out. You're seriously the man.
apart from the low quality of the video and that ear-stabbing background music
the trick is really helpful
big fat thank to you dude
I have a version that’s animated and cleaner
This guy is a bloody genius. I hit a roadblock weeks ago and this guy fixed it in like 30 seconds. Well done!
@dazmoe82 ya sorry about the music, there won't be any more music from now on.
Omg! Thank you so much! Unlike every other tutorial I've seen, yours was the simplest and clearest! Everyone else's was just so confusing ! Yours is the best. Though your music is a bit distracting but it saved my life. I should have noticed this sooner!
For *bigger* numbers, (120°, 135°, 150°, 180°), the trick still works, but *for sin*, for every angle, instead of 0, 1, 2, 3, 4 like in the video, count down from 4 to 3 to 2 to 1 back to 0.
So, if sin90 is sqrt4/2, sin120 will be sqrt3/2, sin135 = sqrt2/2.... so on.
*For cos*, you have to count up, so from 4, 3, 2, 1, 0 in the video, for every angle, it goes from 1 to 2 to 3 to 4, but add negative (-) in front.
So say cos90 = 0, then cos120 = -sqrt1/2, or -1/2, cos135 = -sqrt2/2, cos150 = -sqrt3/2.... so on.
Jenalene Santelices Yes that is correct, I explain this in another video that I have.
+RelearnMath so does that go for the angles after that too. like 210, 225, 240, etc...
Use the concept of reference angles; since 330's in quadrant 4, you subtract it from 360. (360-330 = 30). Use the sin/cos values of 30 but change the signs and since the angle is in QIV then it's y-values (sin) are negative. Sin30 is 1/2 and sin 330 is -1/2. The same goes for other reference angles
Made a new video that explains the trick in 2 minutes + no background music!
how do you calculate cos (A/2) ,given sin A= -3/5 ?
how do you calculate cos (A/2) ,given sin A= -3/5 ?
how do you calculate cos (A/2) ,given sin A= -3/5 ?
+Pee Wu Jian Algebra, just treat A/2 as a different variable, call it t, now t = A/2 or A = 2t.
and u didn't give the link...how helpful!
You have no idea how much this video helped me. I did great on my trigonometry exam because of this. Thank you for sharing!
holy, this is a life saver...up to this point I only knew how to get common angles between 30 and 60 without memorizing stuff! Now I know how to get 90 and 0 as well !!! And I just realized I can get 180 by negating the exact values!!! Thanks man.
You explain it better than the teachers. All I could find was "This is what it is because it is." None of them ever really "Explain it." Good job, dude.
Oh yeah, BTW, MOAR!!!
@dhill89 Lol I kept the music on so that my next door roomates wouldn't think im crazy talking to myself.
I HAVE A TRIG AND ALGEBRA FINAL TOMORROW I SPENT SO MUCH MONEY FOR THIS CLASS I AM SOLID WITH THE ALGEBRA BUT A BIT UNSURE WHEN IT COMES TO THE TRIG STUFF THIS HERE IS CHANGING MY LIFE I LOVE YOU SO MUCH I WILL SCK YO' DCK FO' FREE.
+KaiserFailed did you fail your exam tho
+Bacosack - I sure as hell did NOT :D
good job!! asked bc of ur username
Bacosack - lmao KaiserWins! (finally)
;D
KaiserFailed how was the exam 😂😂
@kiojose Sorry for the lack of reply but as a college student I don't have a lot of time in my hands, but to answer your question there are several ways to figure it out, but the easiest and using the "trick" above would have to be using your imagination, first subtract increments of 360 to 1200 until we get it to a value below 360. So if you subtract 360 3 times your left with 120 degrees. Then we picture the unit circle in our mind, we know that in quadrant 2(between 90 and 180) the value 120
This helped SO much. My exam board don't want the values rationalised, but with this method, only sin45 and cos45 need to be rationalised and it is REALLY easy.
@GeneVarsity Im not sure what your asking but you find tangent by using the relationship between sin and cos, since we know that tan= sin/cos
You helped so much! This method is genius! I would've never been able to memorize the 30,60,90 and 45,45,90 triangles! You don't need to even know them without this amazing method! Thank you!
@comeon7894 I should have explained reference angles in the video because I get a lot of these questions on my inbox lol, ok for sin(240) we first find the reference angle, 240 is the same as 60 degrees except that its in quadrant 3(picture the unit circleit in your head ), so we use the trick for sin(60)and we get [sqrt3/2] but since sine is negative in quadrant 3 that answer is [-sqrt3/2]
don't worry i can relate, I've been out for the same amount of time and its hard to remember the old stuff , well i don't know what other stuff are in the ASVAB but i heard its not that difficult, and ive been really busy lately :( i will try to get back to youtube videos as soon as possible and just a tip if all else fails when factoring always go to the quadratic formule :) goodluck!!
What level of Math are most of you taking? Thinking about making a series for a specific Math class, otherwise I will upload transmission line theory videos haha.
+RelearnMath IM in Trig Honors for high school. Thanks for the simple method really helped, especially knowing that my teacher is to stuck to teach up lol. These lessons would really help me out!
holy balls dude. You're over powered and a GIANT thanks to you. You totally answered every question I had.
You are absolutely right, however for a student who just needs to pass trig this can be very helpful.
well sometimes teachers follow a strict curriculum and if you are thinking of majoring in any STEM major then it's wise if you memorize them
Sin is a measure of how much perpendicular two objects are.
Hence sin(90)=1.
Cos is a measure of how much parallel two objects are
Hence cos(0)=1.
Sin comes into picture when two things produce maximum effect working against each other.
Cos comes into picture when two things produce maximum effect working parallel to each other.
There are videos dedicated to trignometry on my channel if you. Actually also have a book written on such topics.
Binnoy
Thanks Carissa, and actually this video was a one shot vid, I shot it from my phone and uploaded it directly, didn't edit or anything lol.
remember that negatives are reference angles so use that :)
It's the simple stuff that often helps the most. Loved this technique. Thanks very much for the video.
I do have a bunch of stuff, but I just haven't had the time to edit them and put them up :(, what specifically do you need help in?
What happens when you have an angle bigger than 90?!?!?!?
You imagine the sin/cos wave.
Nice music in the background. I love metal music.
First video ever!
i have a quarter exam tomorrow, this helped a lot :)!
Thank you so much for this trick. I wish professor's would learn tricks like this.
If you can keep the paper in one place, it would greatly help the future viewer. Thanks again.
@invaderaf tan150= -tan(180-150)=-tan30= -sin(30)/cos(30) = (-1/2)/sqrt3/2= -1/sqrt3 = -sqrt3/3
I don't care about the distracting hardcore rock in the back, the random black dots all over the paper, or even the crappy editing; THIS VIDEO IS PERFECT
Thanks so much, this is the most helpful table, my teacher just said to memorise them but this table is so much better
@kiojose radians as well to get another perspective, i hope i didnt bore you with the essay lol^
you should do a video on double angle and half angle indentities
You sir just saved my life. Definitely subscribed.
Dude this video is going to help me a lot with my trig class! keep it going!
Dude you're a legend.
@Octayne93 Its a TI-XS MultiView, I got it at target for like 10$
Thank you sir! I have an algebra test real soon and this really helped!
How do you get your calculator to give you exact answers?
Woah i will use this forever thank you so much dude!
Thanks sir, it was a lot helpful to me. I was learning trigonometry so I was really confused. But this video literally helped me.
Could you post a vid on how to use coterminals to find the exact values?
OMG BRO YOU JUST EXPLAINED WHAT MY TEACHER COULDNT!!!
Hi RelearnMath, I suggest u next time u should turn off the music because it makes me (and probably some other people) get distracted a lot because I tried to listen to what you are trying to say.
Hi Manh ,
I apologize I will remake the video with no music.
when you type in a trig value on you calculator, you get it in surd form. Does this work on Casio calculators as well?
so therefore, If I was evaluating 65 degrees multiplied by sine I would get 3 1/6, since there are six 5's from 60 to 90 and 60sine is equal to 3 and 90sine is equal to 4.
I'm stuck on evaluating Tan65 degrees so I could use some help. Cheers!
thank you sooo much!!!! i have to take a test tomorrow and this trick is incredibly helpful!!!
SO HELPFUL!!!! I'm about to take a test in a few minutes im going to ace it now!
well -180 is the same as 0 degrees right?
Nice keep it up man, you foundation will make things easier in the future if your good at geometry and algebra and really understand the concepts behind the math then more advanced classes will become easier, I learned this the hard way.
Oh my gosh. This is so helpful. Thank you for posting this!!!!
Ok but how would you find the tan of 54 knowing its not normally a number that is given???
Really liked this video but what do you do if you are asked to find exact values for say, tan 75 or sin 100?
anything co-terminal with the given degrees.
I am trying to compute pi and unfortunately, i can't compute the sine of numbers like 9*10^(-8). Could you teach another trick for numbers less than 1? If possible, of course. ;) Nice video, by the way!
then how would you solve: Cos(a)=2/3 and tan(a) is positive, find the exact value of sin.
Sir do you know what ? You just saved a life
Thanks dude and awesome music
Use Coterminal angles, good luck!
Last song a place where u belong, god I love you
hey, would it still work if we continued using angle measures from the unit circle? For example, instead of just going from 0 to 4, we could go to like, 0 to 10, with the correct corresponding angle measures from the unit circle of course. let me know, thanks :)
What if the degrees are higher than 90? How would you do that?
So, what about csc,sec, and cot? Would you just switch the 2 and the square rooted number from what you found?
What about sin one-twenty? I have that and I'm stumped.
thank you! you are my saviour! can this be applied for radians too?
this is freaking ground breaking!
Most helpful chart ever!
What if you only have graphing calculator ? And what is the angles are 150?225?
This is awesome! One issue though... What if you have an angle greater than 90 degrees? Can you still use that basic set up but use the coterminal angle? For example, a question on my assignment says: "Find the exact value of sin(1290*)" How would I go about that using this method? I would love a video over that!! Thank you :)
yes, conterminal angles work since values just repeat.
hey bro, whats the band singing on your background? And I LIKE YOUR TUTORIAL! Helps me alot!
Jonathan Valente I actually don't know, it was random music playing in the background sorry.
+Jonathan Valente The song at 4:53 is Sick Puppies-You`re going down ;)
Right side of the bed by Atreyu
+I, Killastrata first song at least
This was very good, it helped me a lot. Keep them coming
@MELLOGURLY No problem and you welcome, spread the word :).
Find the co terminal angle and use the chart.
Amazing trick man, thanks for the nifty tip.
Dude you are awesome. Thank you so much for this! Made this so much easier to learn.
So simple I like that ...
do you have a trick to finding sin. cos.tan of values above 90 degrees
Damn dude, you saved a lot of people!
Thanks man !
This is great. And love the taste of music
This video was super helpful!! Thanks for making it!!
What about bigger numbers like the tan -630 degrees? or cos 585 degrees???
I'm having trouble with identities, half angles, double angles and of course inverse functions. If you have any tips or tricks that will help I'd appreciate it. Thank you Iris
How about if they asked for cos(35)? how would you solve that?
great video man, can you make a video of getting the exact value of sin cos tan in radian form?
Click on the annotation at the beginning of the video. It will take you to an animated version with radians and degrees.
But what about values of other sin values like sin 24 and sin 37 , how to find these , please tell and make a another video on this 🙏
Those are normally done on a calculator, these are the exact values only
thanks dude. only if there was a chart for bigger numbers aswell.
Why the hell would you have a song in the damn background while you're explaining something ._.
if there included pi , how can i solve it ? such as tanx = -1 the ans is 3pi/4....
how about if the sin is a fraction what do you do ?
HI, how do i find cos 270? would it not be cos = 0 so there for using this table it should be 1? kinda confused
thanks brother you are a greate nobody like you