" The angle between the lines "kx+y+9=0,y-3x=4" is "45^(@)" then the value of "k" is "

If the acute angle between the lines 4x-y+7=0, kx+5y-9=0 is 45^(@) , then the value of k is

The angle between the lines 4x-y+9=0, 25x+15y+27=0 is

The angle between the lines 3x-y-1=0 and 2x+ky+5=0 is 45^(@) find k

A : If the angle between the lines kx-y+6=0, 3x+5y+7=0 is pi//4 one value of k is 4 R : If theta is angle between the lines with slopes m_(1), m_(2) then tan theta=(|m_(1)-m_(2)|)/(|1+m_(1)m_(2)|) .

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

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

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

If an angle between the lines ax^(2)-7xy+3y^(2)+3x+y-2=0 is 45^(@) then a=

The angle between the planes kx+y-z=9 and x+2y+z=7 is (pi)/(3) then k =

If the angle between the lines 3x^(2)-4y^(2)=0 is tan^(-1)k , then k=