Law of Sines and Law of Cosines (4 Examples)

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  • čas přidán 5. 08. 2024
  • Learn how to work with the law of sines and the law of cosines in this video math tutorial by Mario's Math Tutoring. We discuss when to use the law of sines and law of cosines as well as going through 4 unique examples. We discuss how to solve for the missing side or missing angle in a triangle.
    Related Videos to Help You Succeed:
    Ambiguous Case Law of Sines
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Komentáře • 127

  • @rooftoptrading461
    @rooftoptrading461 Před 7 měsíci +47

    Mr Mario. as a dad who forgot all his math I have to thank you for putting this together. It makes helping my kids a breeze. Thank you.

    • @MariosMathTutoring
      @MariosMathTutoring  Před 7 měsíci +8

      Awesome! Thanks for letting me know! Glad my videos can help your family out!

  • @Techmatt167Official
    @Techmatt167Official Před 3 lety +269

    This man needs a cookie for saving us all from online learning

    • @rebelalliance1883
      @rebelalliance1883 Před 3 lety +2

      You guys still have online school, I have been in full time since September

    • @lejouve8000
      @lejouve8000 Před 2 lety +3

      Or sum shampoo

  • @christiandeocampo7533
    @christiandeocampo7533 Před 2 lety +50

    Sir, you are great teacher Because unlike any youtube tutorial videos your voice is loud and clear, your examples are brilliant and The best of all it's completely free... Thank you so much Sir You were such a big help for me

  • @neodong6060
    @neodong6060 Před rokem +19

    Mario's explanations and examples are amazing. He makes learning the material so many times easier, and the fact that he's doing this for free and out of the good of his heart is amazingly gracious. He's the math teacher we all wanted, but didn't deserve. Someone give him a cinnabon

  • @abdullahfarid1091
    @abdullahfarid1091 Před 3 lety +27

    This video is the only thing I actually learned during online school lollll

  • @klasrem
    @klasrem Před rokem +12

    This video is a life saver. I want to say you taught this in a much easier to understand way than my teacher did in a week. Granted, I didn't pay much attention on Sines, but I did with Cosines, and I now have a clear understanding of both. My teacher never mentioned anything about Cosines being used on SSS and SAS triangles. You have a really good way of teaching this stuff. Good job!

  • @diamond1628
    @diamond1628 Před 4 lety +80

    My guy this was perfect timing I just learned this today. THANK YOU SO MUCH

  • @camilaben
    @camilaben Před 3 lety +27

    Super helpful! Needed an extra bit of review and this was perfect!

  • @angelvilla1952
    @angelvilla1952 Před 2 lety +13

    This dude taught me more in 9 mins then my teacher did in 2 weeks

  • @corsonforcas
    @corsonforcas Před 2 lety +4

    It was this easy!? Wow thank you so much, you thought me what 3years of private high school couldn't! Thank. You sosososo much

  • @williamposthumus8133
    @williamposthumus8133 Před rokem +2

    Dude this helped so much I was gone the day we learned this and had no clue what was going on but after this video I’m feeling great about these problems now. Thank you so much!!!

  • @salvatoreverlingo3193
    @salvatoreverlingo3193 Před 3 lety +4

    yo just helped me past my test you are a living legend

  • @deadloverboy9519
    @deadloverboy9519 Před 3 lety +6

    I really frustrated with this due to taking it online, but this video has helped me understand it more thank you.

  • @morningdew20
    @morningdew20 Před 3 lety +4

    Ack! Thank you so much for this! I was totally confused on this until I saw your video! Thank you so much!

  • @josiahrutledge8152
    @josiahrutledge8152 Před 2 lety +2

    Thanks man, great teaching. Helped me out a ton

  • @NaomisDream
    @NaomisDream Před 2 lety +4

    Getting some last minute studying in before my final! Thank you 🙏🏼

  • @IODell
    @IODell Před 2 lety +1

    Long time viewer. Great instructive videos. Thank you.

  • @johnnychong3050
    @johnnychong3050 Před 3 lety +2

    Thank u so much, i always learn better in ur videos and the equations and style is similar or identical on whats taught on my class.

  • @fabiookonolanguages
    @fabiookonolanguages Před 3 lety +3

    Thank u bro!! I watched a lotta Brazilians teachers but I can't learned it very well, u helped so much!!

  • @seyakei8052
    @seyakei8052 Před 3 lety +5

    My s.y just ended but i have a lot of activities i missed and this helps me a lot thank u and the fact that the video is short but understandable really thank u

  • @jasonhardwood4819
    @jasonhardwood4819 Před 2 lety +3

    My teacher made it so much long then it should have been for the equations thank you I hope I do well on my test!

  • @shambali4173
    @shambali4173 Před 2 lety +1

    Well I've got the equivalent of a leaving cert or a GCSE exam coming up to finish high school and I'm glad I found your videos!

  • @alfredsanford5765
    @alfredsanford5765 Před 3 lety +4

    Wow. This makes so much more sense now

  • @dustinprice6043
    @dustinprice6043 Před 2 měsíci

    You have a great way of explaining things so that they make sense, giving the reason behind why things are being done and providing ways to memorize things in an effective way. Thank you for this gift.

  • @ShabowG
    @ShabowG Před měsícem

    MARIO THANK YOU SO MUCH YOU JUST SAVED ME

  • @GiornosArm
    @GiornosArm Před rokem +1

    Great video, helped a lot in collage cause I had forgotten about most of this stuff from highschool

  • @ammarabushaqra3158
    @ammarabushaqra3158 Před 3 lety +1

    Thanks now I’m ready for this exam

  • @kaynvx
    @kaynvx Před 5 měsíci

    this video literally saved my life tysm

  • @wangnguyen9854
    @wangnguyen9854 Před 4 lety +4

    You couldn't have posted this video at a better time. You da man

  • @raymondallenjhangiani7670
    @raymondallenjhangiani7670 Před 4 měsíci

    Fantastic 🙏 truly appreciate very much 🙏🙏🙏 awesome teaching skill 😇👍 thank you sir !

  • @Bikramthapa10
    @Bikramthapa10 Před rokem

    Thank you Mario, goat teacher

  • @nakul.singh.156
    @nakul.singh.156 Před 3 lety +2

    Thank you so much sir , helped me a lot . Hearty thank you from an Indian .

  • @Cytoskelton
    @Cytoskelton Před 2 měsíci

    love this guy. Hope you are doing well.

  • @issaarenaaraneta4908
    @issaarenaaraneta4908 Před 2 lety

    thank you sir! 🙌🏼❤️

  • @DrDanTeaches
    @DrDanTeaches Před rokem +2

    Great summary! Thanks for the comprehensive approach. I'll be posting this video as a reference for my students.

  • @oscarpeterarcuna5400
    @oscarpeterarcuna5400 Před rokem +1

    Thank you so much, you make MATH challenges understandable and it may not be easy but we can learn from you.

  • @mondolawrancearmba
    @mondolawrancearmba Před 8 měsíci

    Awalys impressive and understandable teaching... keep it up sir

  • @pogi2555
    @pogi2555 Před 4 lety +8

    Very helpful! thank you mario

  • @NANACOM342
    @NANACOM342 Před 4 měsíci +1

    Thank you so much this is easy to understand!

  • @nikolasmaillis6862
    @nikolasmaillis6862 Před 3 měsíci

    I never understand my algebra and geometry teacher, and Mr. Mario, you always have the 10 minute videos that explain clearly what she tried to teach me in 2 hours. 😁

  • @hahyunrin
    @hahyunrin Před 4 měsíci

    Thank you so much! Tbh, I understand this a lot more than studying in my class

  • @sal4383
    @sal4383 Před 4 lety +2

    dude you’re fking awesome my geometry teacher is awful and doesn’t teach anything but with you i’m CHILLING. god bless bro

  • @martinaabunacion1611
    @martinaabunacion1611 Před 3 lety

    Thank you sir

  • @hasratullah7386
    @hasratullah7386 Před rokem

    Great 👍 sir.

  • @Zetrro
    @Zetrro Před 5 měsíci

    Learned this 3 years ago, forgot it, need it for SAT, now i know it. Thanks so much.

  • @ohhesnumb4409
    @ohhesnumb4409 Před rokem

    W teacher!

  • @MuhaddisaSarwari
    @MuhaddisaSarwari Před 2 lety +3

    This was extremely simple and helpful, thank you so much!!

  • @Heimsendir
    @Heimsendir Před 8 měsíci

    After serving 9 years in the Navy and trying to go back to school, your video's have been amazing, thank you and I hope you are doing well.

    • @MariosMathTutoring
      @MariosMathTutoring  Před 8 měsíci

      Thanks so much for your positive comment. Glad my videos have been helping you.

  • @chandynasty4966
    @chandynasty4966 Před rokem +1

    Thank you so so much with this video! It really helped since my geometry teacher doesn't teach us!!

  • @Pe4rls2
    @Pe4rls2 Před rokem

    bro is a prodigy at teaching math fr

  • @Tanner_777
    @Tanner_777 Před 5 měsíci +1

    Thank you!

  • @almondtofu9394
    @almondtofu9394 Před 2 lety

    Thank you soo much 😭😭 I hope your pillow is always cold have a good night 🤩🤩

  • @user-zg6ce9zz3e
    @user-zg6ce9zz3e Před 5 měsíci

    thank you so much you helped me and my grade:)

  • @justsomekid5971
    @justsomekid5971 Před 2 lety

    I like how he simplifies things.

  • @pillowyflunky9931
    @pillowyflunky9931 Před 2 lety

    thanks

  • @user-mq8pw6oi7g
    @user-mq8pw6oi7g Před 8 měsíci

    Thanks sir, it was very helpfull

  • @Lisa-en3em
    @Lisa-en3em Před 4 lety +4

    Thank u sir khan academy is stressing me out and this helped a lott

  • @jasminewhitehead1752
    @jasminewhitehead1752 Před 2 lety

    I’m in a college trig class online over the summer. Lemme tell u. This video helps me understand. I need someone to explain it to me.

  • @henrycentore7978
    @henrycentore7978 Před 3 lety +1

    good shit mario

  • @son-ce3gr
    @son-ce3gr Před 2 lety +5

    hey
    what if you’re given a triangle without labeling sides ABC respectively and there’s a missing angle at the top?

    • @CookiehsAndDreams
      @CookiehsAndDreams Před 2 lety +8

      I might be a little late on this and I don't fully understand it either, but if you have the angles of the other two sides, you should be able to just subtract those two angles from 180, you should be able to get the missing angle. I might be wrong, but I hope I could help a little!

  • @mkkkk1643
    @mkkkk1643 Před 2 lety

    Ur Brian is so bright under the light

  • @aissatudrammeh807
    @aissatudrammeh807 Před 2 lety

    thank you you helped A LOT!!! may god reward you

  • @user-zv5ik3ei4h
    @user-zv5ik3ei4h Před měsícem

    For the first question what do I type in the calculator?

  • @molindahenry6748
    @molindahenry6748 Před 2 lety

    How do we plug in the cosine ratio into the calculator because I keep getting larger numbers instead of 6.7 6:37

  • @chellianrainnefrias8695

    Thank u so much for explaining this,but when it's comes at the end of (Bcos)I still don't understand how did you get the 225=121×81-198cosB

  • @oluwakemijoy6291
    @oluwakemijoy6291 Před 3 lety

    I hope I can get a few things from this video

  • @bitoraima3435
    @bitoraima3435 Před 3 lety

    An 18m cable is connected to the top of a 14m radio mast and fastened to the ground at an angle theta to the horizontal.
    1. Draw a diagram to illustrate the problem?
    2. Calculate the theta in degrees correct to 2 decimal places?
    Post your ASAP??

  • @wertyboy8704
    @wertyboy8704 Před 2 měsíci

    you made me pass my test by .82% thankyou so much :D

  • @jojimmanuay6712
    @jojimmanuay6712 Před 3 lety +1

    Thank you johnny sin teacher

  • @omega3594
    @omega3594 Před 2 lety +1

    Hi! at 8:28 shouldnt it be +198 to cancel -198? why is it also negative?

  • @noahwilmerdevera4384
    @noahwilmerdevera4384 Před rokem

    How did you get the the 96 in 8:45 ??? Can you pls explain sir

  • @-clipz-
    @-clipz- Před 6 měsíci

    God bless

  • @thropops138
    @thropops138 Před rokem

    in 5 minutes you explained what it took my teacher like 7 weeks to even do half

  • @noyonika3415
    @noyonika3415 Před 3 lety +8

    anyone else's teacher not teaching them and giving them these videos instead? rip

  • @ashakirdak4897
    @ashakirdak4897 Před 4 lety +1

    Will you explain ?
    (e^ix)= cos x +i sin x
    With examples

    • @cal8869
      @cal8869 Před 3 lety

      im asuming that you figured it out

  • @leeno44
    @leeno44 Před rokem

    I just need help with the calculator how did u get .805 I couldn’t get it

  • @erikabiggs6501
    @erikabiggs6501 Před 2 lety

    Hey just a little thing but maybe show us what your calculators says zoom into the calculator or show the camera it so we can see the weapons you push

  • @Wesso2803
    @Wesso2803 Před rokem

    bro saved my ass, thank you.

  • @oliviapositano8145
    @oliviapositano8145 Před 6 měsíci

    Can you explain how you got 6.7 in the first cosine law example

    • @MariosMathTutoring
      @MariosMathTutoring  Před 6 měsíci +1

      This more recent video I did may explain it better for you: Law of Sines and Law of Cosines (Complete Guide)
      czcams.com/video/x0_vS14mUt0/video.html

  • @bambiii787
    @bambiii787 Před rokem

    Wait how did you multiply by inverse of cosine with no degree measure

  • @snebbs25
    @snebbs25 Před 6 měsíci

    At 2:36 he says that the angle is 53.6 but when I put it into the calculator I got 53.61 so wouldn’t it be 53.6? I’m so confused 😢

  • @wxrd_
    @wxrd_ Před rokem +1

    2:02 why did u multiply by 6, is there any other way to solve without multiplying by 6?

    • @MariosMathTutoring
      @MariosMathTutoring  Před rokem +1

      You want to get the sinC by itself….another option is to cross multiply to get rid of the fractions. Hope that helps!

    • @vkaygee
      @vkaygee Před 9 měsíci

      @@MariosMathTutoring how did you get the .805 and what did you multiply to get 53.7?

  • @kuroe5868
    @kuroe5868 Před rokem

    help how do I get the inverse cosine on the calculator? TT

    • @MariosMathTutoring
      @MariosMathTutoring  Před rokem +1

      Usually have to press the ‘2nd’ key first then sine, Cosine, or tangent

  • @mightyjames6579
    @mightyjames6579 Před 2 lety

    what iff theres no degrees or number inside the triangle

  • @eddyherfst2923
    @eddyherfst2923 Před 2 lety

    👍

  • @LongingAsp
    @LongingAsp Před 3 lety

    Yeah I have a quiz on this tomorrow but I can't get the calculations to work out. I put the law of cosine problem into my calculator and I get a totally different number than what you got

    • @ryderdarden2152
      @ryderdarden2152 Před 3 lety

      Did you ever figure it out on why it was different

    • @alexaltman8106
      @alexaltman8106 Před 3 lety +1

      @@ryderdarden2152 probably cause it was in radians mode instead of degree mode

  • @mikasantos5723
    @mikasantos5723 Před rokem

    3:53

  • @chrisvfx3737
    @chrisvfx3737 Před 2 lety

    Yo bro I approve Strucid

  • @WWEfan051905
    @WWEfan051905 Před 2 lety

    Still dumb cause i still dont know how to solve for the last side on the first example😂