badrobot14
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usually if a graph is plotted on a graph paper, marking it is enough you dont need to write (1,i) but if you write it won't hurt, but if it is sketched on answer sheet/question paper then its good to write (1,i)...Yeah. Do we need to label points on argand diagram, suppose I drew a point A on argand diagram, do I also need to write it's co-ordinates beside it like (1,i) or just drawing the point is enough.