сл 5 Find a Cartesian equation for the curve. r = 5 sec(0) Identify the curve. line ◇ limaçon ◇ hyperbola circle ◇ ellipse The Cartesian coordinates of a point are given. (a) (-4,4) (i) Find polar coordinates (r, 0) of the point, where r > 0 and 0 ≤ 0 < 2. (r, 0) = (ii) Find polar coordinates (r, 0) of the point, where r < 0 and 0 ≤ 0 < 2π. (r, 0) = (b) (2,2√3) (i) Find polar coordinates (r, 0) of the point, where r > 0 and 0 ≤ 0 < 2. (r, 0) = (ii) Find polar coordinates (r, 0) of the point, where r < 0 and 0 ≤ 0 < 2π. (r, 0) =