4.7.3 Graph of the inverse secant function

. . Graph of the inverse secant function The inverse secant function, y sec is a function whose domain is  \ and the range is \ ]     Fig. . and Fig. . are the graphs of the secant function in the principal domain and the inverse secant function in the corresponding domain, respectively. Fig. . Fig. . Remark A nice way to draw the graph of y = sec or cosec : (i) Draw the graph of y = cos or (ii) Draw the vertical asymptotes at the x -intercepts and take reciprocals of y values.