Mathematics · important
Collinearity condition in Argand plane for JEE
Argand diagram
Formula
\(z_1,z_2,z_3\text{ are collinear }\iff \dfrac{z_1-z_3}{z_2-z_3}\in\mathbb R\)
Variables: \(z_1,z_2,z_3\in\mathbb C\)
Conditions: \(z_2\neq z_3\)
Straight line and geometry problems in complex plane.