GCSE Sectors of Circles and Arc lengths

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  • เผยแพร่เมื่อ 30 พ.ย. 2024

ความคิดเห็น • 91

  • @thepullens6844
    @thepullens6844 11 ปีที่แล้ว +5

    Big thanks i am 45 and my wife is slightly older, we both sat our GCSE last week. We would like to thank you for your guides as they are very easy to follow and understand. We will defiantly be encouraging our kids to watch them in due course.

  • @HEGARTYMATHS
    @HEGARTYMATHS  11 ปีที่แล้ว +12

    You are most welcome! The very best of luck in your exams. Very proud to have been of help. Good luck!

  • @chelselyh
    @chelselyh 8 ปีที่แล้ว +16

    I have my maths exam tomorrow and ive been watching your videos for so long and this is the last video i'm going to watch at GCSE, thankyou so much!!!

    • @dh0055
      @dh0055 5 ปีที่แล้ว +5

      Well, how are u 3 years later?

    • @caramelcutieee2298
      @caramelcutieee2298 4 ปีที่แล้ว +4

      Yeah, it's been FOUR years now, I wanna know how they did lol

    • @mehvishfatima3503
      @mehvishfatima3503 4 ปีที่แล้ว +4

      Same, how was your exam? Did you pass?

    • @o5-106
      @o5-106 3 ปีที่แล้ว +4

      HE died IRL

  • @nexo6018
    @nexo6018 10 ปีที่แล้ว +36

    Thanks dude your a lifesaver watched the whole lot of videos at 1am

    • @HEGARTYMATHS
      @HEGARTYMATHS  9 ปีที่แล้ว +2

      Nexo Hiya - thanks loads!!! A favour to ask....Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

    • @liamryall-friend296
      @liamryall-friend296 8 ปีที่แล้ว +2

      I hope u win your awesome!!!!!!

    • @harrih632
      @harrih632 5 ปีที่แล้ว +3

      wrong "your" man smh

    • @carryhutler
      @carryhutler 4 ปีที่แล้ว

      @@harrih632 Its not even any use of 'your' smh

  • @Alaia1420
    @Alaia1420 2 ปีที่แล้ว

    9 years and still very helpful and easy to understand thanks hegartymath.

  • @clairglen1
    @clairglen1 11 ปีที่แล้ว +1

    you are a grade saver :0 i've watched 50 of your video's in 3 days and you have taught me more than my maths teacher, Thank you so much

  • @pozer121
    @pozer121 11 ปีที่แล้ว +3

    I watched all your aqa videos and just thought I'd say thanks for all these videos because I got an A in the exam from a D in my mock :)

  • @shayan3725
    @shayan3725 7 ปีที่แล้ว +3

    As for the last question, when finding out the length of the chord, you can also use the Sine Rule.
    You know that it's an isosceles triangle because two of the lengths are equal. The base angles are equal, and they are 30 degrees each. So now you know all the angles and all the sides except one so you can find that one out using the Sine Rule.

  • @MSGAMER
    @MSGAMER 6 ปีที่แล้ว +2

    Thanks for getting advanced and solving some complex questions
    I really appreciate your videos

  • @fallahk_4459
    @fallahk_4459 7 ปีที่แล้ว +16

    "underline your work"- HEGARTYMATHS 2k12

  • @wendypope2970
    @wendypope2970 8 ปีที่แล้ว

    Hi Mr Hegarty
    we use your you tube videos in our lessons as adult learners wish you had been about doing this 20 years ago
    I've been diagnosed dyslexic with numbers last year
    I have to say without too much gushing that you are a great teacher I've not been over everything you've posted but love the way you teach especially if you do a step by step approach like
    3x4 squared gives you 16 so when you add this to your formula of volume 9 + 16 = 25 then break it down a little for discalculia people
    as sometimes I wonder where a number came from because my thinking and working out is rusty and muddled too so you do a little more basic introduction as the education system let me down very badly there's gaps in my basic learning in maths
    Much thanks for your hard work over the years I hope you win the maths prize you are selfless and brilliant👍

  • @HEGARTYMATHS
    @HEGARTYMATHS  11 ปีที่แล้ว

    Because the angle is in radians. A different measure they use in A-Level but the angles given in GCSE are measured in degrees.

  • @temsii_
    @temsii_ 8 ปีที่แล้ว +3

    Thanks again..don't know what I'd do without your help 😩😭💗

  • @MutammimChowdhury
    @MutammimChowdhury 10 ปีที่แล้ว +3

    This channel is really great, keep up the great work!!!

    • @HEGARTYMATHS
      @HEGARTYMATHS  10 ปีที่แล้ว +1

      Cheers Mutammim Chowdhury Be sure to check out hegartymaths.com for loads more help. Mr H

  • @HEGARTYMATHS
    @HEGARTYMATHS  11 ปีที่แล้ว

    Dear Craig. There should be an S/D button on your calculator that coverts fractions to decimals. Press this and it will decimalise the 16/3 pi to get the answer 16.8. Hope that helps. Mr H

  • @HEGARTYMATHS
    @HEGARTYMATHS  11 ปีที่แล้ว

    Dear Mr and Mrs Pullen. Very delighted if I have helped you. Best of luck in those exams and let me know how you do. Mr Hegarty

  • @HEGARTYMATHS
    @HEGARTYMATHS  11 ปีที่แล้ว +4

    yes. hes talking about a-level

  • @farooqfazal5955
    @farooqfazal5955 10 ปีที่แล้ว +5

    hegarty ur a very good teacher i encourage u to make more videos

    • @HEGARTYMATHS
      @HEGARTYMATHS  9 ปีที่แล้ว

      ***** Hiya farooq- thanks loads!!! A favour to ask....Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

  • @BFR-jc5np
    @BFR-jc5np 6 ปีที่แล้ว +2

    For the arc u can just do thêta over 360 x pie x diameter

  • @HEGARTYMATHS
    @HEGARTYMATHS  11 ปีที่แล้ว

    Yes as diameter is two times radius

  • @SoltrassGaming
    @SoltrassGaming 8 ปีที่แล้ว +4

    what if you're not given the radius?
    -separate question- and what if you're not given the angle but you're given the al and sa??

    • @mariuma2414
      @mariuma2414 6 ปีที่แล้ว

      Sirage rearrange the formula

  • @stewartsmith1464
    @stewartsmith1464 6 ปีที่แล้ว

    When using the sine rule for the last question I do a/sin120 = 60/sin30, but that's a negative number so what did I do wrong?

  • @olaabuelhussain7754
    @olaabuelhussain7754 7 ปีที่แล้ว +1

    thank you . you really helped in this lesson can make more explanation sector and arc :)

    • @olaabuelhussain7754
      @olaabuelhussain7754 7 ปีที่แล้ว

      in Quesion 12 you wrote the arc formula but why, the said about a circle sector and why you didn't write in sector formula

  • @glowystar7091
    @glowystar7091 3 ปีที่แล้ว

    8 years ago but still useful 💖

  • @sammora470
    @sammora470 4 ปีที่แล้ว

    What I want to understand, is for the 4th question where you have the right angle, why don't you just work out the circumference and then x by 0.75 to get 3/4 of the circumference which is the same answer?

    • @laibavlogs6782
      @laibavlogs6782 4 ปีที่แล้ว

      you can also do that but he was just using the formula

  • @Fifaxdd3490
    @Fifaxdd3490 11 ปีที่แล้ว +2

    Thankyou! Exam tomorrow:(

  • @victoriapownall4871
    @victoriapownall4871 11 ปีที่แล้ว +1

    I used the sin rule to calculate the length of the side on the triangle but still reached the same answer seemed easier that way

  • @abbyp8865
    @abbyp8865 11 ปีที่แล้ว

    it all makes sense. Thank you very very much :)

  • @HEGARTYMATHS
    @HEGARTYMATHS  11 ปีที่แล้ว

    yes keshika

  • @ኣይትጻረፍተነሳሕካብሞትክ
    @ኣይትጻረፍተነሳሕካብሞትክ 7 ปีที่แล้ว +1

    where do you live sir? if you live in London i would like to meet you and i am good in maths and doing Gcse this year so i need your help 100% you are life saver thanks but reply me pls

    • @t.4861
      @t.4861 4 ปีที่แล้ว

      Creep mr.hegarty won't meet some random stranger

  • @jackspeat3152
    @jackspeat3152 11 ปีที่แล้ว

    Do we get Sine and Cosine rules on the equation sheet?

  • @gavinpasqual6209
    @gavinpasqual6209 5 ปีที่แล้ว

    holy shit you helped me so much. im about to do a test where its life and death

  • @emilyhooper9078
    @emilyhooper9078 8 ปีที่แล้ว

    What do you multiply by two?

  • @roseyrose3799
    @roseyrose3799 6 ปีที่แล้ว

    Fave math teacher

  • @abbicampbell3433
    @abbicampbell3433 11 ปีที่แล้ว

    When I do arc length I do angle/360 x pi x diameter, is that the same as angle/360 x 2 x pi x radius?

  • @Rubmybeanplease
    @Rubmybeanplease 11 ปีที่แล้ว

    Would this more likely be on non calc or calc?

  • @HEGARTYMATHS
    @HEGARTYMATHS  11 ปีที่แล้ว

    No. 2 x pi x r x theta/360

  • @nikgraal7611
    @nikgraal7611 6 ปีที่แล้ว

    im trying to learn this in yr 9 and its very challenging

  • @kenny3282
    @kenny3282 3 ปีที่แล้ว

    I’m so confused on what pie equals what is pie and how did you work it out

  • @zenyak9004
    @zenyak9004 8 ปีที่แล้ว +1

    Thank you bro ur a good teacher :) but is there a factorising topic video , can u send me the video link? Thanks again :)...

  • @cC-ju6wf
    @cC-ju6wf 4 ปีที่แล้ว

    How do you this out on a non calculator paper

  • @ShadowX-lg2bt
    @ShadowX-lg2bt 6 ปีที่แล้ว

    Hi mr Hegarty I just wanted to say again I'm sorry you don't keep the answer as accurate as possible eg a long answer. I have done your questions and I kept my answer in pi until the last bit the final answer. Is that vital for the real exam?

  • @Abzin0
    @Abzin0 3 ปีที่แล้ว

    isnt arc length and sectors the same thing because it has the same formulas?

  • @tommo91000
    @tommo91000 11 ปีที่แล้ว

    Can you do a video on set theory and venn diagrams

  • @unlimited_hope
    @unlimited_hope 6 ปีที่แล้ว

    Thank you very much ~

  • @idrinkpith1404
    @idrinkpith1404 3 ปีที่แล้ว

    pls im revising the night before my mocks lmaooo!

  • @kazkilos
    @kazkilos 6 ปีที่แล้ว

    life saver . but can someone tell me , you know the grade A* they are quite hard to get like that and I would want to be able to answer thought questions like that so what can I do ???

  • @MFR571
    @MFR571 11 ปีที่แล้ว +2

    At 5:00 you got 982.969 but on my calculator it said 982.4711111? So if I put 982.5, would it be deemed as incorrect? By the way, neat videos.

    • @kingofblox2976
      @kingofblox2976 5 ปีที่แล้ว

      I got 355.3 for the last one, but he said 355.2

    • @parijat8166
      @parijat8166 5 ปีที่แล้ว

      @@kingofblox2976 355.3 is right, but 982.5 is wrong. This happens when you round off values and use them before getting the final answer.

  • @warsameabdi36
    @warsameabdi36 10 ปีที่แล้ว +1

    thank you so much

    • @HEGARTYMATHS
      @HEGARTYMATHS  9 ปีที่แล้ว

      warsame abdi Hiya - thanks loads!!! A favour to ask....Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

  • @mairajay7187
    @mairajay7187 8 ปีที่แล้ว

    Thank you!!

  • @claudiahughes431
    @claudiahughes431 11 ปีที่แล้ว

    thanks! i get it now:)x

  • @ZeeshanAli-ho4ye
    @ZeeshanAli-ho4ye 10 ปีที่แล้ว

    plz tell me why exam q`s are alot more complex than this

    • @verocaleb137
      @verocaleb137 6 ปีที่แล้ว

      Zeeshan Ali Should've gotten the gist

    • @verocaleb137
      @verocaleb137 6 ปีที่แล้ว

      Frederick Andoh hey, there when r u appearing for gcse?

  • @nadeemleon4197
    @nadeemleon4197 6 ปีที่แล้ว

    How do u convey number into pie plz sum1

  • @Craigo177
    @Craigo177 11 ปีที่แล้ว

    Brill, thankyou!

  • @clairglen1
    @clairglen1 11 ปีที่แล้ว

    Thank you, non- calculator on tuesday and calculater on friday :/

  • @liamryall-friend296
    @liamryall-friend296 8 ปีที่แล้ว

    Thank you so much!

  • @HumdrumandCola
    @HumdrumandCola 11 ปีที่แล้ว

    yeah

  • @iarezzz
    @iarezzz 5 ปีที่แล้ว

    exam tomorrow :)

  • @gogontlekeletso2341
    @gogontlekeletso2341 8 ปีที่แล้ว

    ThIs is fReaKinG AWEsomE ItS 21:00 rn Where I Am and I am onLy sLeePinG at 23:00 bc ExAms TomorRoW t

  • @emilyjanenudds1577
    @emilyjanenudds1577 4 ปีที่แล้ว

    doing it in lesson this week and dont get it

  • @nadeemleon4197
    @nadeemleon4197 6 ปีที่แล้ว

    Oh got it

  • @Tmanrulez247
    @Tmanrulez247 11 ปีที่แล้ว

    your answer still gives 39 because you round down

  • @kazanova17
    @kazanova17 8 ปีที่แล้ว +2

    it should be 355.3 not 355.2 at the end

    • @ShadowX-lg2bt
      @ShadowX-lg2bt 6 ปีที่แล้ว +1

      Zack yes that's true because he didn't leave the other answers as accurate as possible and that can really affect you in the real exam. I'm 16 doing 2018 GCSE and I need to learn you must always keep your answer as accurate as possible even in pi until the final answer XD

  • @Angiebeau
    @Angiebeau 7 ปีที่แล้ว

    Thanks Mr heagarty shame i have to experience another Tory ad watching these videos slamming Jeremy Corbyn.. honestly focus on your manifesto!

  • @morpheus4k33
    @morpheus4k33 5 ปีที่แล้ว

    chicken nugger

  • @deathstar1229
    @deathstar1229 6 ปีที่แล้ว

    Made ot 69

  • @deathstar1229
    @deathstar1229 6 ปีที่แล้ว

    M

  • @deathstar1229
    @deathstar1229 6 ปีที่แล้ว

    L