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    I'm doing the C2 paper on 22/05/2014 and have been looking at the trigonometry section today. Is it necessary for us to know the quadrant rule? I just find it stupid and can much more easily do it from drawing out the graphs.
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    No you don't it's up to you which one you want to do. I personally prefer the quadrant rule.
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    (Original post by bbadonde2)
    I'm doing the C2 paper on 22/05/2014 and have been looking at the trigonometry section today. Is it necessary for us to know the quadrant rule? I just find it stupid and can much more easily do it from drawing out the graphs.
    Are you referring to cast? If so i agree with you it's rubbish.
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    (Original post by Ilovemaths96)
    Are you referring to cast? If so i agree with you it's rubbish.
    Yeah they call it case as well. I prefer to do it by the graphs, however, the graphs need to be nice and tidy.
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    (Original post by bbadonde2)
    Yeah they call it case as well. I prefer to do it by the graphs, however, the graphs need to be nice and tidy.
    Not really. A rough sketch will suffice.
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    (Original post by bbadonde2)
    I'm doing the C2 paper on 22/05/2014 and have been looking at the trigonometry section today. Is it necessary for us to know the quadrant rule? I just find it stupid and can much more easily do it from drawing out the graphs.
    I would use the graph method, I think its faster and nope you don't have to know the quadrant rule.
 
 
 
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