Find the angle between the line joining the points (2, 0), (0, 3) and the line `x+y=1`.

Find the angle between the line joining the points (1,-2), (3,2) and the line x+2y-7=0

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

The angle between the line joining the points (1,-2) , (3,2) and the line x+2y -7 =0 is

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

Find the anlge between the line joining the points A(3,-4,-2) and B(12,2,0) and the plane 3x-y+z=1 .

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

Find the angle between x+y=3 and the line joining points (1,1) and (-3,4)

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