Learn to find the missing angles for a triangle using inverse trig functions

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👉 Learn how to find a missing angle of a right triangle. A right triangle is a triangle that has 90 degrees as one of its angles. The trigonometric identities of right triangles gives us the relationship between the angles of a right triangle and the side lengths of the right triangle. These trigonometric identities, commonly called SOHCAHTOA, are: sin x = opposite / hypothenuse; cos x = adjacent / hypothenuse and tan x = opposite / adjacent. These identities enables us to find a missing angle of a right triangle given the required side lengths.
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• Right Triangles
✅Find The Angle of a Right Triangle
• Find The Angle of a Ri...
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Опубликовано:

23 мар 2014

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Комментарии : 1,5 тыс.

@brianmclogan 4 месяца назад

Easy Medium Hard Missing Angle of a Triangle - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-DvC02LZk3B4.html

@rando8081 4 года назад

Teacher: Teaches Student: I AM CONFUSION RU-vid Teacher: Teaches Same thing Student: yes

@JoeJoe-ny1yg 4 года назад

facts

@P0w_art 4 года назад

Actually I was confusionism

@kitterbug 4 года назад

this is literally me what

@euphoricyoongi 4 года назад

The thing is my teacher doesn’t teach (:

@BB-nq5cx 4 года назад

because you can pause and take it back and watch it where ever

@grant8164 4 года назад

Who procrastinates and searched this at the last minutes

@zarico6157 4 года назад

Joseph Hitler Me for sure. My math final is in 7 minutes

@Sea_ItsSharkie 4 года назад

I mean, no need to call us out.

@MemeSource. 4 года назад

@@zarico6157 Dedication is real right now

@user-fo4ue9mo4z 4 года назад

I watch this on my free time. I think math is fun

@Yoh_Mama 4 года назад

ঊᴄᴏᴏʟ ᴘʀᴏ agree i did too

@Meye0889 5 лет назад

Student: “It’s so confusing” Teacher: “What’s confusing?” Student: “Everything” 😂😂😂

@FirstNameLastName-fu8ml 5 лет назад

Teacher:

@saigonfrontiers8617 5 лет назад

Teacher: ö

@MrSigma_47 5 лет назад

May May that’s what my classmates say in my 7th period class 😂😂 I under stand it but some stuff is confusing.

@inventionist172 5 лет назад

this is not complicated and i'm 11 i fell bad for the students

@akvilelapunaite7464 5 лет назад

@sampeterkoski5589 4 года назад

hi, yes, anyone else here because of covid do you have online school but no ones teacher is teaching? cause same

@sampeterkoski5589 4 года назад

meme dream pekingese yorkie

@paper_knives_pastel_skies3291 4 года назад

Same I’m gonna scream cause i still have to do the SAT next year and my teacher wont help

@LethalSeagull 4 года назад

Yup. Fun times

@catphat7912 4 года назад

Have to know this to make a fucking doll house roof for my sis

@someonemayhaps8391 4 года назад

Yup, I'm a freshman and my teacher just slapped me in the face with trigonometry with only a bit of instructions and I have to scavenge the internet for instructions lol

@kalvin6517 3 года назад

I learned more in 3 minutes of your video than a whole week of my class.

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained. Full unit on right triangle trigonometry plus more units

@Luvkioo 2 года назад

If you have ears to hear, hear and understand you are probably one of GODS lost sheep that needs to be found there is this hole in your heart and you tried many times and many things and many ways to fill it and still are but it’s not working and it keeps getting bigger and bigger you would be around multiple people and still feel lonely and work so hard to take those bad thoughts away etc but let me tell you JESUS is the one who can fill that whole in your heart JESUS is that missing piece you’ve been looking for, that peace that’s never ending that true love and joy and happiness it’s in JESUS not of this world but of the kingdom of heaven and if you want to accept him in your heart all you have to do is believe in the gospel A-admit that you’re a sinner and that you need forgiveness, B-Believe that JESUS CHRIST died for your sins and rose again, and C-Confess your faith in JESUS CHRIST and his lordship over your life and you will be saved and this amazing feeling is not a drug it won’t last a couple hours but forever eternally bc it is not of this world but of GOD who sits on the throne of heaven forever and ever HALLELUJAH

@calebperumalsamy7492 2 года назад

Facts

@wrathtitansstudio 2 года назад

Sme

@omdeshkar4290 2 года назад

We only learn when we want to learn

@cata183 5 лет назад

1:40 "Why are you asking me man?" LOL

@sethgyellins 5 лет назад

That person was a fucking dumbass

@micah5277 4 года назад

Nathaniel Flores CALM DOWN DEVAN!!!!

@Lg-xt5eh 4 года назад

Ponyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

@onlybull420 3 года назад

1:16 way off?

@Levelonesucks 3 года назад

thought he said "he asking me man!" cause another student answered for him

@brentwalthall9690 Год назад

I'm an engineer that hasn't done any math for decades. I needed to find an angle of a right triangle. This video was excellent and reminded me how very quickly. Thank you!

@user-xt7jq8qp9x 4 года назад

1:48 I was out here screaming “SQUARE ROOT U KNOBHEADS ITS 4!” 😂😂

@naveensundar4765 4 года назад

*plusorminus 4

@user-xt7jq8qp9x 4 года назад

True I know what you mean because it could’ve been negative 4 it would still lead to positive

@lewis4901 3 года назад

PAHAHA THATS THE MOST BRITISH THING IVE HEARD TODAY

@user-xt7jq8qp9x 3 года назад

@@lewis4901 lol I’m Australian but I get where u get that from

@microTrash28 4 года назад

Why does this guy have a so much friendlier vibe than my math teacher?

@torreyjohnson250 3 года назад

I like him better than mine because he takes more time to explain why you need to do something so you can remember it easier, and he doesn't blame you for not knowing how to do something on the first day of learning it.

@evanwu9428 5 лет назад

thank you for saying, "Remember to turn your calculator to degree mode." I spent so long trying to do my math homework until I realized I was on Radians mode. 😂

@_Donaexox 5 лет назад

Evan Wu how do you change it bc I’m using my phone😂😂

@evanwu9428 5 лет назад

@@_Donaexox Oh, I use a math calculator not sure how to do it on phone.

@Phoenix-kn2fu 4 года назад

@@evanwu9428 look for scientific mode in ur phn calculator, i guess evry phn has it

@CASH-TO-THE-MERE101 4 года назад

Evan Wu 🔥

@rachelakanni8256 4 года назад

Seriously

@matthewgage1508 5 лет назад

How are they learning trig but can’t even under stand basic algebra x^2=16

@nwwink 5 лет назад

We are learning this in algebra1

@Maya-ch7gq 5 лет назад

That’s what I was wondering

@TJMJR1963 4 года назад

I observed that, too.

@tiffy_loves 4 года назад

Right!? I was like square it... square it... SQUARE IT GUYS COME ON

@pac8546 4 года назад

so true, they dont even know what the opposite of squaring is.

@dego5064 4 года назад

3:23 that realistic classroom expirience tho

@EASFromTheWest 3 года назад

i don’t get it😂😂😂😂

@rune.theocracy 5 лет назад

Lol I understand it now, I blame myself for being sleepy at math class.

@xjgame7555 4 года назад

hey cant 100 percent tell is that Rin Okumara from blue excorcist

@moniquemorris6890 3 года назад

XJ GAME do you watch anime?

@gmann.1923 3 года назад

I stopped caring about school I just go in urine after class

@thatoneguy4798 3 года назад

Bruh they making me start geometry and trig in ninth grade... MA BRAIN EXPLODED

@nerdhopper8604 3 года назад

@@thatoneguy4798 THEY MADE ME START IN 8th grade 😭

@user-ed7he9ii8k 4 года назад

Sir. You are amazing. I wish I had you as a teacher honestly Please don’t stop these teaching lessons they are so helpful!

@brianmclogan 2 года назад

If this video or many others was helpful, please consider letting me know with a "Super Thanks" above ⬆. I am able to read and respond to all my messages and thank you so much for your support

@aaryangupta3852 2 года назад

Thanks

@EvelynMartinez-fc6mq 2 года назад

Thanks !!

@cloudy3690 2 года назад

Super Thanks 😎

@yaxy410 2 года назад

thanks alot about to have my maths paper 1 on friday :)

@ThatHuskyRider Год назад

this was the most helpful thing ever im doing my most important exam in yr 9 and this is helping so much

@generatorjohn4537 4 года назад

I was taught right angle trigonometry for the 1st time in my high school electronics class early 1970s. My teacher was fantastic. Never forgot the concepts he taught. We had to look up the trig functions using tables or if I remember correctly could be found on a slide rule. No calculators to rely on in those days kids. Thanks for the video.

@sakinaabedi1662 5 лет назад

Dude, I have a final on this tomorrow and I don't how to thank you enough!!! You explain everything in detail and go step by step. This really helps, Thank You So Much!!!

@matthewrivera5110 4 года назад

what did you get ?

@menafuls 3 года назад

cmon what was your score

@self-proclaimedanimator 2 года назад

Yes how much you got?

@jonebones4662 Год назад

I want to pipe you man

@yeehaw6420 5 лет назад

I like how most of us are commenting on 2019 when this vid is 4 years ago

@daviangonzalez8878 5 лет назад

bayabasss cause we all gonna need to learn this eventually In 9 grade like me rn 😂

@koffee8743 5 лет назад

davian gonzalez That’s odd I am in six grade and I’m learning this

@nissaholmquist6147 4 года назад

KC Draws its not odd lol different schools teach different curriculum, high schools jump around with what year they teach what math subject all the time, for example.

@Zetaga 4 года назад

@@daviangonzalez8878 now we're in geometry!! Yay 8th grade is fun

@Brainer 4 года назад

yee haw 5

@Konblight 6 лет назад

My teacher couldn't explain this to me, so I looked it up. I've Been watching videos for 30 mins an this is the only one that explains it in such great detail. Thank you!

@brianmclogan 6 лет назад

you are very welcome Noah! happy to be there for you

@mmaniamos 5 лет назад

We also see the good of you tube math

@teese1630 4 года назад

@@brianmclogan yeah why is your class room full of such idiots. Are you a special ed teacher. your skill set was so good teaching normal students they gave you the morons?

@Josh_pkz 2 года назад

@@teese1630 That isn't very nice.

@nodice100 5 лет назад

1:42 "wHy aRe yOu asKinG mE maN?!" lmfao

@waynesmith6591 4 года назад

And that man can ask if he want to

@guidinglight6968 3 года назад

@Mustafa Malik I don’t know how they got so many likes lol

@ninjaboy8239 4 года назад

I applaud him for the patience to deal with these fools

@jeremybumpermanpub7144 4 года назад

I know right. How could they not know that the inverse of squaring is square rooting. Epic 🤦🏻‍♂️

@oblivionsghost7430 3 года назад

I mean some schools just don't teach things-- so some kids just learn them later then others

@tessaduindam9302 5 лет назад

Thanks so much! Your little statement "Make sure you're in degree mode" just saved me.

@h3adhuntersgaming546 21 день назад

I have been working out Precal two online for almost 2 months and every time the instructions aren't clear and I got to youtube and find your videos they immediately help me. Thank you for doing what you do!

@presidentshark5783 4 года назад

Crazy, I could never understand my instructor teaching me about trig.. then I find this legend and I learn how to do it in a matter of minutes. tyty.

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained

@payne1003 3 года назад

Been a few years since I had to do this math. I really love how you explained it and made it easy to follow.

@pranknetwork35 4 года назад

This guy seems like a great teacher! They’re lucky to have him!

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained. Unit on right triangle trigonometry plus more units

@AlissaVaj 4 года назад

An ad just said “what? Still searching on RU-vid for homework help?” How do they know-

@wavytv9978 4 года назад

Fugly Nxjsn same here

@Engene_jakey7 3 года назад

Omg I just got that add😅

@russelstlln5852 2 года назад

i like how its short and detailed.

@jaylahinojosa6471 2 года назад

I know this video is old but thank you so much, I'm stuck online and without zooms trying to keep up with lessons. This really helped!

@brianmclogan 2 года назад

You are very welcome!!

@jeremywright7832 4 года назад

don’t worry friends, you won’t be torment with these question on whatever job you get in the future, so learn and enjoy it as it last.

@mabciapayne16 3 года назад

im creating starship game and i need this lol

@Zanarkendjp 3 года назад

Laughs in pipe trade.

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained. Unit on right triangle trigonometry plus more units

@itsrainingyou 2 года назад

Yeah, I use it every day in aerospace, gage standards metrology.

@staceywacey1978 3 года назад

It has been more than 20 years since I had to do any math more complicated than multiplication and division. THANK YOU SO MUCH for making it so simple.

@themaconeau 2 года назад

Did a google search, went to one page and it explained most of it. Came to this video and this showed me the rest. I liked the bit where you said, "The mode must be in degrees". That was one of the stumbling blocks I had before watching this video. For context, I'm watching this for a woodworking project to work out what angles I need to cut for two wood panels to meet perfectly. Thanks. 👍

@tylerbuttpants 3 года назад

0:14 "And here, is my opposite side." "ooo"

@mickmccrory8534 5 лет назад

As a rebar detailer, (old school) I use these trig functions all the time to figure angles & bends. The kids use a Microstation CAD program that figures it for them, & don't have a clue what trig is.

@walkingwiki2682 Месяц назад

teacher: explains me: not understand youtube teacher from 10 years ago: explains me: understand

@elizabethrose644 3 года назад

“what’s confusing?” “everything” me everyday

@Avionics1958 5 лет назад

Teacher to student: are you confused? Student : yes sir! Teacher: good that makes two of us😂😂

@danielllanos653 4 года назад

lol

@mohammadathar9299 3 года назад

Bro ur so phunny i forgot to laugh

@toopasty4361 4 года назад

"Why you askin' me man?" whole squad laughs

@lynxwrld9 2 года назад

Dude you carried me through geometry this semester finished off with a 93A TYSM man I don’t think I could’ve done it without you

@gt86life50 4 года назад

It's been years since I took trig and this video really helped for a programming project I was working on! Thank you!

@SarahSmith-qj4uz 5 лет назад

Thank god I found this video, this was so helpful

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained

@kichigan1 5 лет назад

Great teacher. Funny. So knowledgeable. Thanks.

@kyleflenniken971 9 месяцев назад

For some reason I have always had trouble understanding inverses. This video really broke it down all the way to the basic operations and their inverses. Great video!

@TopGarfieldEnthusiast Год назад

Bro I appreciate you so much, I was having a breakdown at like 3 AM because I could not figure out how to find the reference angle and you made it all so much easier, keep up the good work my man

@themanandthemyth4176 Год назад

i am a devin ngl

@austinkramp3502 5 лет назад

This helped immensely, thank you

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained. Full unit on right triangle trigonometry plus more units

@user-oc3so6zr3z 4 года назад

I'm in an engineering structures course and because none of my math teachers throughout high school or college actually described what an inverse trig function was you were able to teach me something. Now all these statics problems make sense.

@Vipton__ 8 месяцев назад

you have no idea how much this has helped me, I have a very important maths test tomorrow, and this will most likely save my grades im so thankful. I couldn't understand what my teachers taught me this, but you explained it so well. please continue to do what you do!

@mmaniamos 5 лет назад

Thanks this is helpful to students

@lovaz8195 5 лет назад

I AM GETTING TO THE FINAL EXAM TOMMOROW THANK TOU👍TEACHER

@jakephillips2164 4 года назад

Thank you! I’m trying to calculate the angles of a support beam to a work bench I’m building and this got my two cut angles down! Thank you!!

@_Perry-eh4qb 2 года назад

When I was watching 1:57 I was just shouting "SQUARE ROOT!".

@TylerDaSilva522 4 года назад

This really helped! My math problem looked identical to this one.

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained

@nathanhassan3920 3 года назад

2:05 I was screaming square root omg

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained. Full unit on right triangle trigonometry plus more units

@christopherortega5382 2 года назад

Thank you for making that very simple. I have a very important test coming up for my career and this really helped. I appreciate the simple instructional video.

@El_cnquistador Год назад

What would I have done without your videos man, this is the best help I’ve had about this topic

@johnfelixcometa2997 5 лет назад

As 3:40 - 3:47 turned out, all my questions in my head was flushed out like water from a gardening can... T H A N K Y O U S O M U C H ! ! ! ! !

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained. Unit on right triangle trigonometry plus more units

@cosmocaris8225 3 года назад

D E G R E E M O D E

@Rachaelllsarah 7 лет назад

These videos are good thank you!

@brianmclogan 7 лет назад

happy to help!

@jeffersonhernandez2503 5 лет назад

No they are not

@blueocean6752 3 года назад

Jellyninjaoof1 1 right I still don’t get it...

@RandomCow-ln1cp 2 года назад

I think it's a great initiative that these videos exist for us, because this helps so much during online school. Thanks.

@YaBoiNicho Год назад

Just started learning trig the last few weeks, made it through college algebra last semester! I was confusing inverse functions with function pairs (sin/cos, sec/csc, and tan/cot). Thank you for clearing that up!

@eisayadhanom17 4 года назад

I wish I had this teacher he makes me understand everything

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained. It can help

@simisloan 3 года назад

i hate trigonometry,

@jakemealey5532 21 день назад

I love it but its definitely not easy

@itzyafireboi5336 4 года назад

teacher hasnt been teaching very well over online classes so you are a life saver

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained. Unit on right triangle trigonometry plus more units

@swayor9032 2 года назад

omg thanks my guy. couldn’t have done this without u

@alexgrivas8261 3 года назад

This guy teaches me more than my math teacher I don’t even listen to her I just look this shit up on his channel

@maxwu9954 3 года назад

Bruh this is me

@maxwu9954 3 года назад

Is ur teacher somehow Mrs Gallagher lol

@tiffy_loves 4 года назад

I was screaming square root at them 😂

@spiderjerusalem4009 4 года назад

Ikr, i knew how to solve this even when i was in the first algebra basic. How could they reach trigonometry when they didn't even know how to solve x²=16 ? (Well, didn't relize this video has been 4 years old)

@Nishan18 4 года назад

Fr, me too😂

@CASH-TO-THE-MERE101 4 года назад

Togunsua 😭😭😭

@rowbie9011 3 месяца назад

I love you Brian. I’ve been having trouble understanding this concept, but you made it so much easier. You’re the best.

@warrenwerks 4 месяца назад

Great lesson, and I appreciate your method of going back to easier examples to make sure the whole class was able to follow along! I wish some of my math teachers had done that in high school

@keddylock5643 4 года назад

This is so helpfull but i"m little confused at the end

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained

@Ruptured_AU 2 года назад

What if I dont have a calculator?

@dogetaro1185 2 года назад

Sir Brian, You have helped me so much with my math the past few days. Your videos always help me in some way. You are a legend man. Thank you.

@rachelakanni8256 4 года назад

This has been a great citadel of learning all difficult those topics in maths class.It had been fun all d way

@coolhandluke1936 4 года назад

how can you do this WITHOUT a calculator? that's what I want to know

@wepopew 4 года назад

The calculator can't get a precise answer, it does an approximation and then maybe some guesswork to get a more precise answer. How exactly it does it depends on the calculator.

@jtdaugherty2893 3 года назад

Anybody else got a test tomorrow on this

@Knzxkk 3 месяца назад

i like this because it shows you a different way to solve the inverse version of these problems. He also explains throughly and step by step.

@bentonrp 3 года назад

I needed to figure out the angles of the triangular sections of a massive hexadecagonal table I'm building. This was really, really helpful. ❤

@aliasalem7914 4 года назад

did NO ONE notice how he did 10-4= 12, its 6 !!!

@halfhumanhalfzombie 4 года назад

Wow didn't know it was relevant at first.

@jael640 4 года назад

nono, i was confused too but he actually just started a new problem, unrelated to the 10 - 4 problem

@hp2179 4 года назад

Yea why

@samfrank4629 4 года назад

You are the guy that doesn't pay attention in class. He didn't do 10-4 = 12, The first one was an example and the second was a different example.

@RegularFish2 3 года назад

@@samfrank4629 piss off

@canadiannuclearman 5 лет назад

ASIN is the same as SIN^-1 some calculators use ASIN Beware SIN^-1 does not mean 1/SIN.

@wildchicken679 4 года назад

Gary Lewis Nice thanks for the heads up

@concretepavement9450 3 года назад

I have a test today on trigonometry and this really helped! Thanks!

@roseelectronics4582 3 года назад

Hands down or hands up, this is the best explanation of basic trigonometric calculations. Thank you!

@itzhamish1521 Год назад

Hi 👋 Teaching myself trigonometry to find a minecraft base lol

@chadgrimes5119 5 лет назад

Yeah there's this one time when my teacher kinda lost his mind and made us take the trigo exam without a calculator which is just plain crazy

@naglaasaadzaghloul172 4 года назад

i dont believe u

@4TH4RV 4 года назад

In India you are not fucking allowed to use calculators.

@18legend19 4 года назад

In some countries schools or student can’t afford a calculator lmfao it’s okay

@k.a.m_dh9959 4 года назад

@@4TH4RV in India you don't have calculators

@J37182 4 года назад

@@4TH4RV damn now this might seem like a wild idea but nobody asked

@danhickman9956 3 года назад

This is so helpful. Helping my high schooler with Trig and this got us through it. Thanks!

@EatBread_123 5 лет назад

great help! made something I couldn't understand after years of questions easy.

@minecraftmovieman1 4 года назад

I KNEW I WAS DOING IT RIGHT IT WAS GODDAMN RADIAN MODE JFKDJFJF

@BattlerOfEarth 3 года назад

that got me too a couple of times

@eurofam7475 4 года назад

The students don’t even pay attention in his class I’m weak 😂

@mathfullyexplained 3 года назад

Try my channel mathfullyexplained. Unit on right triangle trigonometry plus more units

@onespicysauce6599 5 лет назад

Thank you so much! I haven’t been able to do this since Year 9 (when British students are aged 13-14) but this video really helped

@Indie-anaJones Год назад

Super Thanks. I needed to find how to get the non-right angles of a right triangle for some leg inverse kinematics and this video helped tremendously. Thanks a ton!

@Justine-iu4bv 4 года назад

How to get the value of that sine function without using calculator??

@user-fo4ue9mo4z 4 года назад

You can’t

@latoyabanks1685 3 года назад

When you somehow made it into advanced math and need to do geometry in 7th grade.

@danielbarrett6389 4 года назад

mate you just helpped me out a lot, i searched so many vids and non helpped me apart from this one. thanks alot

@ArdaIskender Год назад

That is the perfect explanation there. Especially the opposite method of telling how inverse trigonometry works was smooth.

@ghoul-bt 5 лет назад

same lesson on my math hw, u goated

@matiastoledo4201 3 года назад

Thank you so much! This is extremely helpful for my Geometry exam.

@subbaiahkasi6310 4 года назад

I spend so long tried to find a video like this. Thanks.

@bolshevik3065 5 лет назад

Im reviewing this bcuz im making game that involves 3d

@sunina3601 5 лет назад

In India we do it without calculator

@coolhandluke1936 4 года назад

how? do you have a formula? please share? I really need to know this

@coolhandluke1936 4 года назад

thanks

@Tokyoche Год назад

Mr. Brian, I'm am going to forever be thankful for your content! You are truly and amazing teacher, I would've not survived highschool if it wasn't for you.