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Lowest value that can get the sin and the cos

  1. Sep 17, 2013 #1
    lowest value that can get the "sin" and the "cos"

    Sorry for my stupid question,but I forgot them.
    What is the biggest and the lowest value that can get the "sin" and the "cos"

    Thanks!
     
  2. jcsd
  3. Sep 17, 2013 #2

    Borek

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    Staff: Mentor

    Sorry, but you should check wikipedia before posting such questions, they just show you are lazy.
     
  4. Sep 17, 2013 #3

    arildno

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    Science Advisor
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    Gold Member
    Dearly Missed

    1.If you think of right-angled triangles, how are "cos(x)" and "sin(x)" defined in terms of the sides?
    2. How can you rewrite the Pythagorean theorem in terms of a cos and sin identity?
    3. What would this imply that the maxima/minima of cos and sin ought to be?
     
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