Suppose that you stand at the point (1,2,0) and look in the direction of a point that is not visible because it is behind the ball. you will then be looking at a point on the sphere. if (−2,−3,2) is not visible from (1,2,0), find the point on the sphere at which you are looking if you look in the direction of (−2,−3,2). otherwise, find the point on the sphere at which you look if you are looking in the direction of (−2,−3,1). point (x, y,z)=