(a) If we mark off a distance t along the unit circle, starting at (1, 0) and moving in a counterclockwise direction, we arrive at th---Selest point determined by W terminal (b) What are the terminal points determined by x/2, x, -x/2, and 2? reference quadrant 1/2 (x, (x, y) = (x, y) = -1/2 (x, y) = = 2 (x, y) =