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  1. C

    Sketching Trig Graphs

    Ok so im stuck again. I need to solve cos(2x + Pi/4) so that i can sketch it. i can get it down to 1/sqrt(2)(cos2x+sin2x). But then i get stuck when trying to use the different cos2x solutions and how to simplify it down to just get it in terms of cos. Can anyone help??
  2. C

    Limits

    I am having trouble with finding the limit, as x approaches 0 of (1-cosx)/xsinx. can anyone help?
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