15. (4 points} Power Series from Known Series Calculate the rst two nonvanishing terms in the rTaylor series for sins: about a: = U. a. Use the result of a) to obtain an approximate to F(:I:) = Isin(t2)dt that is a valid for small .93. _ a _ _ _ _ b- Express :36 3 as a Taylor series- \"That is 1ts radius of convergence