Given. 1 L 15 cos(x2) dx Do the following. (a) Find the approximations T3 and M5 for the given integral. (Round your answer to six decimal places.) (b) Estimate the errors in the approximations T5 and M8 in part (a). (Use the fact that the range of the sine and cosine functions is bounded by ii to estimate the maximum error. Round your answer to seven decimal places.) w s E i... s E (c) How large do we have to choose n so that the approximations TH and Mn to the integral are accurate to within 0.0001? (Use the fact that the range of the sine and cosine functions is bounded by :1 to estimate the maximum error.)