Tag: three dimensional geometry
Questions Related to three dimensional geometry
If the points $a(cos \alpha + i sin \alpha)$ , $b(cos \beta + i sin \beta)$ and $c(cos \gamma + isin \gamma)$ are collinear then the value of $|z|$ is:
( where ${z = bc \ sin(\beta-\gamma) + ca \ sin(\gamma-\alpha) + ab \ sin(\alpha - \beta) + 3i -4k}$ )
Three points $A(\bar a),B(\bar b),C(\bar c)$ are collinear if and only if?