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Math Help - cos(theta) = 1/ sec(theta) - why does my book not just say true?

  1. #1
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    cos(theta) = 1/ sec(theta) - why does my book not just say true?

    my book says "All (theta) except (theta) = (pi)/2 + (pi)n"

    The book asks me to find all solutions for the equation.
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  2. #2
    MHF Contributor Siron's Avatar
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    Re: cos(theta) = 1/ sec(theta) - why does my book not just say true?

    Wat about \sec(\theta)=0?
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    Re: cos(theta) = 1/ sec(theta) - why does my book not just say true?

    Is the answer because there are vertical asymptotes on the (pi)/2 + (pi)n period?
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    Re: cos(theta) = 1/ sec(theta) - why does my book not just say true?

    Quote Originally Posted by dangsos View Post
    Is the answer because there are vertical asymptotes on the (pi)/2 + (pi)n period?
    Yep. They occur when \cos(\theta) = 0
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