The Taylor series for f(x) = ln(sec(x)) at a = 0 is > Cn(x)". Find the first few coefficients. Co Ci = C2 C3 = C4 = Find the exact error in approximating In(sec(0.1)) by its fourth degree Taylor polynomial at a 0. The error is || ||||||

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A: Use the Taylor series of logarithm function and use it to determine the Taylor polynomial degree.