Show that the points representing the complex numbers 7+9i, -3+7i and 3+3i form a right angled triangle on the Argand diagram.
Kindly show step by step.
Plot the points, join the dots, get the distances beteen the dots, apply Pythagoras' Theorem.
And a salient thread: http://www.mathhelpforum.com/math-he...-triangle.html.