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Given $y\sin(8x) = x\cos(2y)$ find the tangent line at the point ($\pi\over2$, $\pi\over4$).

I got $y = 2x - 2.36$, but my teacher wants a fraction. Can somebody help me get the answer in fraction form?

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    $2.36=236/100 $. Is that good enough?2012-10-19
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    I'm doing the problem in WebAssign and it says I got it wrong when I entered y = 2x - 2.36 and I don't know why. I don't think she wants 236/100.2012-10-19
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    $2.36 \approx 3\pi/4$. This is most likely the fraction they're after.2012-10-19
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    Ok I will try that, thank you.2012-10-19
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    Nope, I still got it wrong. I am locked out now so I'll ask my teacher on Monday. Thanks everyone for your help.2012-10-19
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    See [here](https://www.math.ucdavis.edu/~kouba/CalcOneDIRECTORY/implicitdiffdirectory/) and [here](http://tutorial.math.lamar.edu/Classes/CalcI/ImplicitDiff.aspx).2013-11-19

4 Answers 4