> t4:= x -> csc(x);

> it4:= x -> arccsc(x);

> z1:= plot(csc(x), x = -Pi/2 ..- 0.1, thickness=2, color = black):

> z2:= plot(csc(x), x = 0.1..Pi/2, thickness=2, color = black):

> z3:= plot(it4(x), x = 1..10, thickness=2, color = red):

> z4:= plot(it4(x), x = -10..-1, thickness=2, color = red):

> z5:= plot(x, x= -10..10, thickness=2, color = blue):

> z6:= textplot([1.8,5,`csc(x)`], thickness=2, color = magenta):

> z7:= textplot([5,4,`y=x`], thickness=2, color = magenta):

> z8:= textplot([-6,-2,`arccsc(x)`], thickness=2, color = magenta):

> display({z1,z2,z3,z4,z5,z6,z7,z8});