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# C2 Trigonometry - Using Quadrant rule Watch

1. 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.
2. No you don't it's up to you which one you want to do. I personally prefer the quadrant rule.
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.
4. (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.
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.
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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Updated: April 16, 2014
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