Find the length of the following two dimensional curve I r t cost t sint sint t cost for 0 ts 2 L Type an exact answer using as needed Find the length of the following three dimensional curve r t cos t 6t sin t for 0 t 6 L Type an exact answer using radicals as needed Find the length of the following three dimensional curve r t 5 2t 3 5t 7 2t for 1 t 3 Type an exact answer using radicals as needed Find the length of the following two dimensional curve 2 2 1 2 7 3 r t 3 for 0 t 18 L Tyno an overt answer using radicals as nooded