WJEC C2 Mathematics 18/05/12
Maths exam discussion - share revision tips in preparation for GCSE, A Level and other maths exams and discuss how they went afterwards.
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WJEC C2 Mathematics 18/05/12How did everyone find today's C2 paper?
I thought it was pretty standard, but I missed out on 3b and 8b. It's so obvious what to have done now, now I'm out of the exam; really annoying. Can still get 68/75 (91-93 UMS) if all my other questions were right though.Last edited by Astonix; 18-05-2012 at 11:15. -
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Re: WJEC C2 Mathematics 18/05/12It was Pythag, I think.(Original post by mattymorse)
8b? is that the second part of the circles question?
sorry, and i may be wrong, but I'm pretty sure the answer was Sqrt49, therefore 7! :/
Length of radius =
and distance between center of circle and T = 
Then the length of RT =
using 
.
Edit: Should be 7, I drew my diagram incorrectlyLast edited by Perpetuallity; 18-05-2012 at 12:00. -
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Re: WJEC C2 Mathematics 18/05/12Rearrange the first equation to make(Original post by mattymorse)
What did people think about the first part of the Geometric Progression question? Think it was 5a! no one in my class i spoke to could do it!
the subject, then substitute this into the second equation. It comes out nicely, and 
(If I remember correctly).
Last edited by Perpetuallity; 18-05-2012 at 11:49. -
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Re: WJEC C2 Mathematics 18/05/12Can't remember my exact angles but have to use(Original post by Coffee_Please)
what did you guys get for the ambiguous angles question?!sat there trying to figure it out for 20 minutes O.O
pretty nice paper though
to find angle Z. Use the CAST method to get two answers. Then Angle X is 
or Angle X is 
where 
are the two different angles you found for Z.
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Re: WJEC C2 Mathematics 18/05/12(Original post by Perpetuallity)
It was Pythag, I think.
Length of radius = and distance between center of circle and T =
Then the length of RT = using .
I also got an answer of 7 for this question -
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Re: WJEC C2 Mathematics 18/05/12Can you share you're method please?(Original post by RoundNRound)
I also got an answer of 7 for this question
Edit: I see what you did.
. Yes, that's it I drew my diagram wrongly.
Last edited by Perpetuallity; 18-05-2012 at 11:59. -
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Re: WJEC C2 Mathematics 18/05/12I actually made it way too complicated for myself and eventually used the sine rule to get the answer, it was so long winded i can't remember what i actually did lol(Original post by Perpetuallity)
Can you share you're method please?
Edit: I see what you did.. Yes, that's it I drew my diagram wrongly.
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Damn! Thought it might have been substitution, though I tried it and it didnt come out! Only question I know I definitely got wrong! Pretty confident for 90+ ums(Original post by Perpetuallity)
Rearrange the first equation to make the subject, then substitute this into the second equation. It comes out nicely, and (If I remember correctly).
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Yeah this is the method I used(Original post by Perpetuallity)
Can you share you're method please?
Edit: I see what you did.. Yes, that's it I drew my diagram wrongly.
This was posted from The Student Room's iPhone/iPad App -
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Re: WJEC C2 Mathematics 18/05/12I know I've lost at least one mark for that(Original post by mattymorse)
Damn! Thought it might have been substitution, though I tried it and it didnt come out! Only question I know I definitely got wrong! Pretty confident for 90+ ums
This was posted from The Student Room's iPhone/iPad App blunder. Hopefully I'll get ecf or something. Everything else seemed fine.
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Re: WJEC C2 Mathematics 18/05/12I don't have the question paper with me so this will be vague, but I integrated the straight line with limits 0-4 and then added on to it the quadratic with limits 4-6. Can't remember my answer though.(Original post by Jessica-May)
what did everyone get for the integration question (graph)?? -
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Re: WJEC C2 Mathematics 18/05/12I minus them :/ but will hopefully get ecf marks(Original post by Astonix)
I don't have the question paper with me so this will be vague, but I integrated the straight line with limits 0-4 and then added on to it the quadratic with limits 4-6. Can't remember my answer though.
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Re: WJEC C2 Mathematics 18/05/12Ha awww did the same as you.(Original post by Perpetuallity)
It was Pythag, I think.
Length of radius = and distance between center of circle and T =
Then the length of RT = using .
Edit: Should be 7, I drew my diagram incorrectly -
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Re: WJEC C2 Mathematics 18/05/12So many bits I waffled about, random number. Especially that Sine and Cosine rule question on that annoying XYZ.
. Overall I think I could have done better. Not as nice as C1 though. Also how did you form an equation to satisfy x in that triangle question?
I learnt everything, but as soon as I got into the exam room I forgot practically everything but logs... 
. Overall I think I could have done better. Not as nice as C1 though. Also how did you form an equation to satisfy x in that triangle question?
