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,-2), (3,2) and the line x+2y-7=0

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 (2, 0), (0, 3) and the line x+y=1 .

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 .

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 line joining the points (1,1,7), (-3,4,7) and a line parallel to (1-x)/(-1)=(2y-7)/(6)=(z+3)/(0) through the point (-1,0,4) is

The acute angle between the line joining the points ,(1,1,7),(-3,4,7) and a line parallel to (1-x)/(-1)=(2y-7)/(6)=(z+3)/(0) through the point (-1,0,4) is

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