Taylor approximation of sin

[teepeemm]

APEXCalculusV5/exercises/08_07_ex_23.tex

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{Find $n$ such that the Maclaurin polynomial of degree $n$ of $f(x)= \sin x$ approximates $\cos \pi$ within $0.0001$ of the actual value.

Unless it's really aiming to be tricky, I think you're wanting f(x)=\sin x to approximate \sin\pi, not to approximate \cos\pi.

[APEXCalculus]

Whoops. Not sure how that one lasted as long as it did.