If the angle between the lines kx-y+6=0 and 3x-5y+7=0 is `(pi)/(4)`then K=

If the acute angle between the lines 4x-y+7=0 and kx-5y-9=0 is (pi)/(2) , then find the value of k

The angle between the lines 2x+y+4=0 and y-3x=7 is

Find the angle between the lines x-2y+5=0 and x+3y-5=0 .

If the acute angle between the lines 2x+3y-5=0 and 5x+ky-6=0 is (pi)/(4) ,then the value(s) of k is/are

Find the angle between the lines x+3y-8=0 and 2x-3y+6=0 .

The angle between the lines 3x-y+5=0,x+3y-2=0 is

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)