Convert the Cartesian point (1, 3)(1,\; \sqrt{3})(1,3) to polar coordinates (r, θ)(r,\; \theta)(r,θ).
(2, π3)\left(2,\; \dfrac{\pi}{3}\right)(2,3π)
(2, π4)\left(\sqrt{2},\; \dfrac{\pi}{4}\right)(2,4π)
(2, π6)\left(2,\; \dfrac{\pi}{6}\right)(2,6π)
(2, 2π3)\left(2,\; \dfrac{2\pi}{3}\right)(2,32π)