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    (Original post by Ethan100)
    Can somebody please watch this video ?

    https://www.youtube.com/watch?v=WflhR8RUd-0

    Its the 2nd last question from Paper 2 2016 Nat 5

    I may be incorrect but isn't the final answer 4.8 + 6.6 (Not +9 as shown in the video).
    Isn't it the radius of the circle which is from the centre to the circumference so it should be 6.6, right ?

    Thanks
    It is 4.4+6.6.
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    How many marks would I get for the question at the end of paper 2

    I wrote 6²+3²-2x6x3xcos(90)
    Root45
    Then 6.7082 and rounded to 7 by accident


    when the correct way was
    6²+10²-2x6x10xcos(3/4)
    root46 then 6.782 rounded to 6.8?
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    Awful! My class had no teacher for three and a half months. Only knew how to do a couple of questions in both papers
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    (Original post by xJoe200)
    How many marks would I get for the question at the end of paper 2

    I wrote 6²+3²-2x6x3xcos(90)
    Root45
    Then 6.7082 and rounded to 7 by accident


    when the correct way was
    6²+10²-2x6x10xcos(3/4)
    root46 then 6.782 rounded to 6.8?
    Possibly 1 for correct form of cosine rule, and you won't be penalised twice for premature rounding.
    So 1-2 probably
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    (Original post by SusanC)
    I got 7 for the length, anyone?
    7 was the right answer! Unfortunately i realised that as soon as i left the exam hall (WHY??!!??) i DID SOMETHING SILLY AND GOT 2ROOT 10 but yeah, 7 was the right answer
 
 
 
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