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  1. N

    trig question

    prove: (1+c-s) / (1+c+s) = c/(1+s) where s = sinA c = cosA i can't do it..........:)
  2. N

    i got 1(c) wrong

    ...and 2(e) ii and 3(c) ii wrong :) + many others
  3. N

    Psychological factor...

    Q17 i think, multiple choice. I didn't think any were psyc. factors but i chose the generic brand answer. what was correct answer?
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