x = 3 + cost (b) 57. Find the point at which the parametric curve intersects itself and the corresponding values of t. (a) x = 1 -th, y =t-+3 (c) 59. In eq ci fa 60. TH pa G (b) x = 21 - t', y = t-+2 ha 61. G YA m a -1 0 X va K 62. G -1 X in ha 63 T