Using polar coordinates, we can draw the curved shape of an arc. The arc below, which is drawn in blue, is described by two polar coordinate points.

For the first point, the origin is at x=0, y=0, the distance from the origin is 70 and the angle is 15.

For the second point, the origin is at x=0, y=0, the distance from the origin is 70 and the angle is 45.