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    So I was brainstorming all last night and managed to create this question, I've checked it and it is fully functional and works. I was just looking for advice on what you guys would grade this question at because my intentions were it would be a grade 9 however i'm not sure. Any feedback is greatly appreciated
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    (Original post by Y11_Maths)
    I haven’t tried it but it looks like grade 9 at first glance.

    If x is anything then the equation for AB seems pointless since x isn’t referenced anywhere else?
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    (Original post by Notnek)
    I haven’t tried it but it looks like grade 9 at first glance.

    If x is anything then the equation for AB seems pointless since x isn’t referenced anywhere else?
    I used x to make the question seem more complex and harder instead of giving x a value where people can sub it in after working it out. It just adds to the difficulty imo
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    This would definitely be 9, I'm predicted 9 and looking at this almost made me crap my pants. Let's hope this doesn't come up (or something similar)
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    (Original post by mundosinfin)
    This would definitely be 9, I'm predicted 9 and looking at this almost made me crap my pants. Let's hope this doesn't come up (or something similar)
    Actually I'm trying to solve this and I don't understand what you mean by 'bac=120 Respectively', namely the respectively part.
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    (Original post by mundosinfin)
    Actually I'm trying to solve this and I don't understand what you mean by 'bac=120 Respectively', namely the respectively part.
    It just means that angle bac=120 degrees. The respectively is just to intimidate students-it looks like its working
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    (Original post by Y11_Maths)
    It just means that angle bac=120 degrees. The respectively is just to intimidate students-it looks like its working
    But it doesn't make sense

    Update: I'm trying to solve this now but as you get to the cosine rule bit the algebra is hellish, it would help if cos120 wasn't a weird number...
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    By all means attempt to solve it
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    grade 10
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    (Original post by mekail2001)
    grade 10
    Haha thank you very much
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    (Original post by mundosinfin)
    But it doesn't make sense

    Update: I'm trying to solve this now but as you get to the cosine rule bit the algebra is hellish, it would help if cos120 wasn't a weird number...
    The algebra is very long winded
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    it looks like a difficult question, and i am trying to solve it, but how is angle a an obtuse angle when the diagram shows it is acute?
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    First glance I'd say it's definitely grade 8/9.

    The diagram is a bit weird, it's acute but it says 120?
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    (Original post by ray44)
    it looks like a difficult question, and i am trying to solve it, but how is angle a an obtuse angle when the diagram shows it is acute?
    Surely you've learnt by now that diagrams are never accurate haha
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    (Original post by Y11_Maths)
    Surely you've learnt by now that diagrams are never accurate haha
    That's true but in trig questions it's very important to know if it's acute or not. Sin(x)=Sin(180-x) for instance could mean that your calculated angle or side in some problems changes (ambiguous case).
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    (Original post by Y11_Maths)
    Surely you've learnt by now that diagrams are never accurate haha
    fair enough haha, ill stop making excuses for myself and get it done
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    (Original post by thekidwhogames)
    That's true but in trig questions it's very important to know if it's acute or not. Sin(x)=Sin(180-x) for instance could mean that your calculated angle or side in some problems changes (ambiguous case).
    Thank you for your input, always happy to take notes on what I can change
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    (Original post by Y11_Maths)
    Surely you've learnt by now that diagrams are never accurate haha
    take this from someone who acc got a grade 9 in maths and is doing maths and f maths at A level, you saying BAC is not 120 degrees is literally wrong... like no diagram is ever that inaccurate when visibly it is not possible.
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    (Original post by Y11_Maths)
    So I was brainstorming all last night and managed to create this question, I've checked it and it is fully functional and works. I was just looking for advice on what you guys would grade this question at because my intentions were it would be a grade 9 however i'm not sure. Any feedback is greatly appreciated
    I'm sure you're very capable in maths for being able to do this, but I think this is more of an AS-Level question.

    At least GCSE content with A Level application - similar to Mechanics 1.
 
 
 
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