1)( 7 pts ) Find the equation of the tangent line at the coordinate point (4' 1) to the parametrically defined curve: x=8t2 3$in(:n:t)+5 y=4t2 6t+3 2) (7 pts ) Using integration find the exact length of the curve of the arc defined parametrically on the given interval 4 x =t V= 6 Osts1 W