you can plot the reciprocal of the coordinates on the graph of y=sinx obtain the y-coordinates of y=cscx . The x-intercepts of the graph y=sinx are the vertical asymptotes fo...you can plot the reciprocal of the coordinates on the graph of y=sinx obtain the y-coordinates of y=cscx . The x-intercepts of the graph y=sinx are the vertical asymptotes for the graph of y=cscx. Assume due north is 0 and x is measured negative to the left and positive to the right. (See Figure below.) The boat travels from due west to due east and, ignoring the curvature of the Earth, the distance d(x) ,