Find the angle between the lines `(x-7)/(2)=(y-6)/(3)=(z+2)/(-4)` and `(2-x)/(-1)=(y-9)/(5)=(z-12)/(4)`.

Find the angle between the lines (x-1)/(2)=(y-2)/(3)=(z-3)/(4) and (x-2)/(3)=(y-4)/(4)=(z-5)/(5)

Find the angle between the lines (x-5)/(7)=(y+2)/(-5)=(z-9)/(1) and (x-5)/(2)=(y-10)/(2)=(z-9)/(-4) .

Find the angle between the line (x)/(1)=(y)/(2)=(z)/(3) and (x+1)/(2)=(y-3)/(-7)=(z+2)/(4)

Find the angle between the lines (x-2)/(3)=(y-3)/(6)=(z-4)/(8)and(x+2)/(2)=(y+3)/(5)=(z+4)/(9) .

Find the shortest distance between the lines (x-6)/(3)=(y-7)/(-1)=(z-4)/(1) and (x)/(-3)=(y-9)/(2)=(z-2)/(4)

The angle between the lines (x-7)/(1)=(y+3)/(-5)=(z)/(3) and (2-x)/(-7)=(y)/(2)=(z+5)/(1) is equal to

Find the angle between the line: (x-3)/1=(y-2)/2=(z-2)/(-4) and (x-0)/3=(y-5)/2=(z+2)/-6