Find the angle between the lines `3 x - 4y + 5 = 0 and 4x + 3y - 5 = 0`.

Find the bisector of acute angle between the lines x+y - 3 = 0 and 7x - y + 5 = 0

Find the equation of thebisector of the angle between the lines 2x-3y - 5 = 0 and 6x - 4y + 7 = 0 which is the supplement of the angle containing the point (2,-1)

Find the acute angles between the st. lines : y-3x-5=0 and 3y -x +6= 0 .

Find the angle between two planes 2x+y-5z=0 and 4x -3y+7z=0

Find the equations of the bisectors of the angles formed by the lines : 3x- 4y + 12 = 0 and 4x + 3y + 2=0.

Find the distance between the parallel lines : 4x - 3y -9 =0 and 4x - 3y - 24=0.

Find the distance between the parallel lines : 3x-4y+ 5 =0 and 3x - 4y + 7=0 .

Find the acute angles between the st. lines : 2x-y+3=0 and x+y-2=0 .

Find the equation of the bisector of the obtuse angle between the lines 3x-4y+7=0 and 12 x+5y-2=0.

Find the equation of the bisector of the obtuse angle between the lines 3x-4y+7=0 and 12 x+5y-2=0.