1. The problem statement, all variables and given/known data The question in the book is: "Use the sum of the first 10 terms to approximate the sum of the series. Estimate the error. My problem is estimating the error I'm looking for. I just need help with finding the integral. 2. Relevant equations ((sin n)^2)/(n^3) 3. The attempt at a solution ∞∫n ((sin n)^2)/(n^3) u = ((sin n)^2) du = 2 ((sin n)^2)cos n dv = n^3 dx v = 1/4 x^4 This is as far as I got.