3. [-/2 Points] DETAILS SCALC9 12.5.057. Consider the following planes. x+y+z = 1, X + By + 3z = 1 (a) Find parametric equations for the line of intersection of the planes. (Use the parameter t.) ( x (t ) , y (t ) , z(t ) ) - (b) Find the angle between the planes. (Round your answer to one decimal place.) Submit Answer 4. [-/1 Points] DETAILS SCALC9 16.2.041.MI. Find the work done by the force field F(x, y) = xi + (y + 1)j in moving an object along an arch of the cycloid r(t) - (t - sin(t))i + (1 - cos(t) )j, Osts 2n