In answering items 2-57 and 2-58, refer to the following equations: x = 2 sin 0, y = 4 cos AY 16 = 2 cos 8, A6 = -4 sin 0 2-57. The general expression for the slope AX 4y of the curve at (X] , y,) is Jabooed bersaion 1. -2 tan 0 moonegobat ex .t 2. _tan 0 betermite ers 3. - cot 0 no 0 4. 2 cot 0 baku mile uk on- 2-58. At the point where 0 = 30 the equation of the normal to the curve is 1. 2x - y/3 + 5 = 0 jog 8 2. 2y - xv3 - 3/3=05035 3. 6y - 3x - 9 = 0 4. 6x - 3y + 8 = Onlylube 2-59. When using parametric equations, we find the vertical tangent to a curve by setting X? At AY 2 . 0 AX m AY AY O AX 2-60. If x = t", y = 3t, At 4X = 2t, and Ay = 3, at what coordinates on the At curve is the tangent parallel to the Y axis? on 1. 1(4,6) 913 03 folleist .1 2. (1,1) 303. (0,1) of aBluntbragisa s 4. (0,0) 2010 38 9071