Mathematics

Problem

9. Find the angle between the following pair of lines: (i)

\frac{x-2}{2}=\frac{y-1}{5}=\frac{z+3}{-3}

and

\frac{x+2}{-1}=\frac{y-4}{8}=\frac{z-5}{4}

(ii)

\frac{x}{2}=\frac{y}{2}=\frac{z}{1}

and

\frac{x-5}{4}=\frac{y-2}{1}=\frac{z-3}{8}