Find the Cartesian coordinates of the given polar coordinates. Then plot the point. (a) (2, π) (x, y) = WebAssign Plot WebAssign Plot WebAssign Plot WebAssign Plot ((b) (4, −2π/3) (x, y) = WebAssign Plot WebAssign Plot WebAssign Plot WebAssign Plot (c) (−4, 3π/4) (x, y) = WebAssign Plot WebAssign Plot WebAssign Plot WebAssign Plot