Find the arc length parameter along the curve from the point where t= 0 by evaluating the integral s= [vidt. Then find the length of the indicated portion of the curve. r(t) = (4e' cost) 1+ (4e' sint) ] - 4ek. - In4st50 The arc length parameter is s(t) =!. (Type an exact answer, using radicals as needed.) The length of the indicated portion of the curve is units (Type an exact answer, using radicals as needed.)