30. [011 Points] DETAILS PREVIOUS ANSWERS SCALCET9 12.3.030. MY NOTES ASK YOUR TEACHER Find the acute angle between the lines. Use degrees rounded to one decimal place. 9xy24, X+?y=35 x 32. [-/2 Points] DETAILS SCALCET9 12.4.030. MY NOTES ASK YOUR TEACHER Consider the points below. P( - 3, 0, 2), Q(1, 4, -2), R(0, 4, 4 ) (a) Find a nonzero vector orthogonal to the plane through the points P, Q, and R. (b) Find the area of the triangle PQR.34. [216 Points] I DETAILS II PREVIOUSANSWERS SCALCET912.6.034. I MYNOTES I ASKYOURTEACHER I Consider the equation below. 8X2 y + 222 = 0 Reduce the equation to one of the standard forms. y = (8x2 + 2:2) Classify the surface. ellipsoid elliptic paraboloid hyperbolic paraboloid cone hyperboloid of one sheet hyperboloid of two sheets I Sketch the surface. (If an answer does not exist, enter DNE. Select Update Graph to see your response plotted on the screen. Select the Submit button to grade your response.) {Write an equation for the cross section at z = 0 using x and y.) (Write an equation For the cross section at y = 2 using x and z.) (Write an equation For the cross section at y = 2 using x and z.) (Write an equation For the cross section at x = 0 using y and z.)