I'm trying to insert $(x_0,y_0)$ into a Maple plot (that's how LaTeX would be written). I want to do this with a Maple command rather than creating the plot then hand-tailoring with mouse clicks. This is what I've tried without success:

p1:=plot(sin, -Pi..Pi,-1..1):

t1:=textplot(Pi/2,0.9,something):

display(p1,t1)

For *something* I've tried such as

Typesetting:-typeset(try)

and

typeset(try)

where try is something like (x[0],y[0]) and [(x[0],y[0])] and similar forms.

No joy! Any help appreciated.