Find the acute angle between the X-axis and the line joining points `A(3,-1)`and `B(4,-2)`

Find the acute angle between the pairs of lines x+3y+5=0 and 2x+y-1=0

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 distance between X -axis and line y=-4 .

Using the determinants,find the equations of the line joining the points (1,2)and(3,6)

The acute angle between the plane 2x+3y-z+7=0 and X-axis is

The intercepts made on the axes by the plane the which bisects the line joining the points (1,2,3) and (-3,4,5) at right angles are