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Math Help - What table of values are right?

  1. #1
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    What table of values are right?

    Can someone help me out for the unit circle... What table of values is the right one?

    http://math.hhpnet.com/mhf4u1/downlo...ngles%20II.pdf

    (look all the way at the bottom)


    or


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    There are a few differences such as:

    cot 60 degrees is either 1/square root 3 or square root 3/3


    which is the right one or what should be used when filling out a table such as those ones?
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  2. #2
    Super Member bigwave's Avatar
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    There are a few differences such as:

    cot 60 degrees is either 1/square root 3 or square root 3/3


    which is the right one or what should be used when filling out a table such as those ones?

    cot(\frac{\pi}{3}) = \frac{1}{\sqrt3} this is the general form
    since cot(\frac{\pi}{6}) = \sqrt3 which is the inverse

    however

    \frac{\sqrt3}{3}  \frac{\sqrt3}{\sqrt3} = \frac{3}{3\sqrt3} = \frac{1}{\sqrt3}

    so they both have the same value

    hope this helps
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  3. #3
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    Thanks.. so that means either one is correct?
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  4. #4
    Super Member bigwave's Avatar
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    Talking

    yes, both are correct

    however use the one in charts first
    unless there is some reason to do otherwise..

    mostly the reason for this is that more you use the functions
    you refer to what is memorized...

    the general form of course can be modified to have the same value in many ways
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