r(t)=t+1,tcos(t),tsin(t) (b) (12.5 points) r(t) lies on the surface of a cone. Find the equation of the cone. (c) (12.5 points) Sketch the cone from part (b), and make a rough sketch of r(l). Be sure to label your axes, label a point on r(t), and sketch the direction of r(t)