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Math Help - I am lost, please help

  1. #1
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    I am lost, please help

    I do not even know where to start with this question:

    Which of the following statements is impossible?

    a)8cos theta= -8
    b) 4tan theta=125
    c) 100sec theta=99
    d)12cot theta=1
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  2. #2
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    i think its (c).
    -1<=cos(theta)<=1
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  3. #3
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by ceroseven View Post
    I do not even know where to start with this question:

    Which of the following statements is impossible?

    a)8cos theta= -8
    b) 4tan theta=125
    c) 100sec theta=99
    d)12cot theta=1
    What's the range for the secant function?
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  4. #4
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    (-1,1)??
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  5. #5
    Rhymes with Orange Chris L T521's Avatar
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    Quote Originally Posted by ceroseven View Post
    (-1,1)??
    No, \left[-1,1\right] is the range for cosine. If you can find the 'complement' of that interval, you will have the range of secant.
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  6. #6
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    So what is the answer? I am confused
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  7. #7
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    Quote Originally Posted by ceroseven View Post
    So what is the answer? I am confused
    Do you even know the definition of sec theta?
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