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Math Help - Trig Derivative

  1. #1
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    Trig Derivative

    Anyone know what the derivative of cos(sinx) is?


    Thanks.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by ctran View Post
    Anyone know what the derivative of cos(sinx) is?


    Thanks.
    Use the chain rule:

    \frac{d}{dx} f(g(x))=f'(g(x))g'(x)

    with g(x)=\sin(x) and f(x)=\cos(x)


    CB
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  3. #3
    MHF Contributor alexmahone's Avatar
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    Quote Originally Posted by ctran View Post
    Anyone know what the derivative of cos(sinx) is?


    Thanks.
    let y=cos(sinx)

    \frac{dy}{dx}=-sin(sinx).cosx
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  4. #4
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    I'm sure glad you guys got in before me. I would have answered, "Yes!"
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