Area of a Triangle (Deriving the trigonometric formula)

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  • เผยแพร่เมื่อ 3 ธ.ค. 2017
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ความคิดเห็น • 24

  • @kashkashimperia
    @kashkashimperia 2 ปีที่แล้ว +4

    Just one video and I am already impressed by how you teach.

  • @MoominAlice
    @MoominAlice 6 ปีที่แล้ว +13

    This is amazing! At my school we always learn "1/2ab×sin(C" and other things but never why. You always explain it so clearly and so well, thank you

  • @celinehosea
    @celinehosea 5 ปีที่แล้ว +11

    You're such a good teacher! Students are lucky to have you as their teacher. :)

  • @lilian7523
    @lilian7523 หลายเดือนก่อน

    Haa finally! After minutes of looking for the right video I finally found this onee!! Its so straightforward and fast, love it.

  • @KategariYami
    @KategariYami 6 ปีที่แล้ว +6

    I need this to remind me of the stuff I learnt and effectively forgot 5yrs ago.
    I don't suppose it's necessary but having a 2nd camera might make your videos more visually interesting but otherwise, this is good.

    • @nwgverified
      @nwgverified 6 ปีที่แล้ว

      Kategari heh i learn't this 6 months ago :)

  • @atakanbaykal775
    @atakanbaykal775 6 ปีที่แล้ว +2

    Your students are very lucky!! These videos are super helpful to your students and other students. Congratulations!!!!

  • @abhishekverma7814
    @abhishekverma7814 6 ปีที่แล้ว +4

    Hello sir , I am a Bachelor of Computer applications students
    But still I watch ur videos .
    I just love ur videos , except these topics are not in my course though.

  • @pretty.cool.sports
    @pretty.cool.sports 3 ปีที่แล้ว +1

    This helps so much.

  • @yasminazab4892
    @yasminazab4892 ปีที่แล้ว

    I liked the idea of linking the the right angle triangle with the unit circle and the non right angle triangle

  • @muhammadshafi2611
    @muhammadshafi2611 2 ปีที่แล้ว

    thank you so much ! this solve my lead compensator problem in control system subject.

  • @abdullahqureshi5934
    @abdullahqureshi5934 2 ปีที่แล้ว

    Your students are lucky to have u ♥️♥️

  • @oscaristhecoolest28
    @oscaristhecoolest28 ปีที่แล้ว

    Thanks sir, had a test and I passed!

  • @charleschaffanjon3168
    @charleschaffanjon3168 6 ปีที่แล้ว

    Thx u very much

  • @michaelempeigne3519
    @michaelempeigne3519 2 ปีที่แล้ว

    fast way to get the sine law from this using this formula.
    write the area formula using all three angles : ( 1 / 2 )ab sin C = ( 1 / 2 )bc sin A = ( 1 / 2 )ac sin B
    Now multiply all of them by 2 : ab sin C = bc sin A = ac sin B
    divide all by abc : ab sin C / abc = bc sin A / abc = ac sin B / abc
    sin C / c = sin A / a = sin B / b

  • @kindgame7273
    @kindgame7273 6 ปีที่แล้ว +2

    You are cool

  • @nwgverified
    @nwgverified 6 ปีที่แล้ว +4

    Oh yeah that makes sense lel

  • @mathogenynavedahmad1635
    @mathogenynavedahmad1635 3 ปีที่แล้ว +1

    How we prove 1/2 bxh.U proved this by using formula.but mathematician derivatives formula how?

    • @wildreams
      @wildreams 3 ปีที่แล้ว

      You can do that by recognizing that there are 3 general cases of triangles:
      Case 1: Right angle triangles. (simplest: Area = 1/2 of a rectangle)
      Case 2: Acute angle triangles. (Area = sum of 2 half rectangles)
      Case 3: Obtuse angle triangles. (Area = 1/2 large rectangle - 1/2 small rectangle)
      Using some algebra, you will realize that all cases leads to (1/2)bh; after you factorize and simplify.
      It's quite simple actually. Why not try this yourself with a pencil and paper? :)

    • @Directlite664
      @Directlite664 3 ปีที่แล้ว

      I think you know how to find the area of a rectangle. l*b.
      So triangle is half of rectangle, ie, 1/2 lb.
      Now, its for right angled one.
      For other types, just make two imaginary right angled triangles and add them up.

  • @masoumehevazi8715
    @masoumehevazi8715 3 ปีที่แล้ว

    Hi

  • @mdkhalid-yu8if
    @mdkhalid-yu8if 10 หลายเดือนก่อน

    How do you speak English?

    • @swagestmoodmaker
      @swagestmoodmaker 8 หลายเดือนก่อน +2

      He’s Australian. Apparently us Aussies also speak the commonly spoken language known as ‘English’