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Thread: Trigonometric Integral

  1. #1
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    Trigonometric Integral

    Any help on this integral will be appreciated!

    <br />
\int \frac {secx}{tanx}dx<br />
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  2. #2
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    Hello, hasanbalkan!

    Did you try simplifying?


    \int \frac{\sec x}{\tan x}\,dx
    \frac{\sec x}{\tan x} \;=\;\frac{\dfrac{1}{\cos x}}{\dfrac{\sin x}{\cos x}} \;=\;\frac{1}{\sin x} \;=\;\csc x

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  3. #3
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    Ohhhh, thanks a lot. I have forgotten this identity 1/sinx = cscx. Thanks again...
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