Recent content by genius123

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    2010 Euclid Contest Discussion

    oh yes i should rethink it
  2. G

    2010 Euclid Contest Discussion

    have you not got the answer 9(B)? very very easy! here is my answer: A/SINA=B/SINB=C/SINC so 2SINA<SINB+SINC because this is permanent. we know SINB+SINC is bigger or equal 2(root SINB*SINC) only when SINB=SINC , it can be equal. so 2SINA<2(root SINB*SINC) SINCE SINB=SINC...
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    2010 Euclid Contest Discussion

    oh ****. 9A(ii)should be 4. i misunderstand the queston. but anyway, i can get at least 80:)
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    2010 Euclid Contest Discussion

    2010 Euclid Contest , very easy. just 10(b)(c) i cannot do it. 9(b): use this formula:A/SINA=B/SINB=C/SINC 7A:too easy .cannot remember the answer 7B:i just remenbered there are 2 points. 8A:cannot remember 8b:110 9A(i):too easy 9A(ii):120
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