Q. The distance of the point $(-1,-5,-10)$ from the point of intersection of line $\frac{x-2}{3}=\frac{y+1}{4}=\frac{z-2}{12}$ and plane $x-y+z=5$ is ' $\lambda$ ' then find value of $[\lambda / 3]$ (where $[\,\,.\,\,]$ represents greatest integer function)
Three Dimensional Geometry
Solution: