Angle between the lines joining `(5,-1,4)` to `(0,2,-1)` and `(0,-2,1)`is

Find angle between the lines formed by joining (2,2,1) with (3,1,4) and (7,2,2)

Find the angle between the lines Joining the points (-1,2),(3,-5) and (-2,3),(5,0)

Find the angle between the line joining the points (-1,3) and (-2,4) and X -axis.

The acute angle between the line joining the points (2,1-3) and (-3,1,7) and a line parallel to (x-1)/(3)=(y)/(4)=(z+3)/(5) through the point (-1,0,4) is

Find the angle between the lines joining the point (0,0),(2,3) and the points (2,-2),(3,5)

The acute angle between the lines joining points (2, 1, 3) and (1, -1, 2) and the line having direction ratios 2, 1, -1 is

Find the angle between X -axis an the line joining the points (-3,-1) and (4,-2) .

Find the angle between the X-axis and the line joining the points (3,-1) and (4,-2) .

Angle between lines joining z_(1);z_(2) and z_(3);z_(4)