The points $P, Q$ denote the complex numbers $Z_1, Z_2$ in the Argand plane. ' $O$ ' is the origin. If $Z_1…
The points $P, Q$ denote the complex numbers $Z_1, Z_2$ in the Argand plane. ' $O$ ' is the origin. If $Z_1 \bar{Z}_2+\bar{Z}_1 Z_2=0$ and $P O Q=\theta$ then $\sin \theta=$