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Math Help - Exact value

  1. #1
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    Exact value

    I'm just wondering, how would I find the exact value of the following expression of sec(-25pie/6)? It's in my textbook but someone scratched the solution out...

    Thanks!
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  2. #2
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    Quote Originally Posted by kelvinly View Post
    I'm just wondering, how would I find the exact value of the following expression of sec(-25pie/6)? It's in my textbook but someone scratched the solution out...

    Thanks!
    \sec\left(-\frac{25\pi}{6}\right) = <br />

    \sec\left(\frac{25\pi}{6}\right) =

    \frac{1}{\cos\left(\frac{25\pi}{6}\right)} =

    \frac{1}{\cos\left(\frac{\pi}{6}\right)} = \frac{2}{\sqrt{3}}


    btw ...

    this is pie




    this is pi ...

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  3. #3
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    Quote Originally Posted by skeeter View Post
    \sec\left(-\frac{25\pi}{6}\right) = <br />

    \sec\left(\frac{25\pi}{6}\right) =

    \frac{1}{\cos\left(\frac{25\pi}{6}\right)} =

    \frac{1}{\cos\left(\frac{\pi}{6}\right)} = \frac{2}{\sqrt{3}}


    btw ...

    this is pie




    this is pi ...

    lol yeah typo! and thanks for the step by step solutions!
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