The acute angle between the lines `3x^2 +hxy+2y^2=0` is of measure `pi/4` then the value of `h` is :

The acute angle between the lines x^(2)-2 x y sec alpha+y^(2)=0 is

The acute angle between the lines (5x-2y)^(2)-3(2x+5y)^(2)=0 is

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 x^(2)-4hxy+3y^(2)=0 is 60^(@) then h=

If the acute angle between the lines x^(2)-4hxy+3y^(2)=0 is 60^(@) then h=

Acute angle between the lines y^(2)-2 sqrt(3) x y+3 x^(2)=0 is

If the acute angle between the lines 2x+3y-5=0, 5x+ky-6=0 is pi//4 , then k =

If acute angle between lines ax^(2)+2hxy+by^(2)=0 is (pi)/4 , then 4h^(2)=

If the acute angle between the lines ax^(2)+2hxy+by^(2)=0 is congruent to the acute angle between the lines 3x^(2)-7xy+4y^(2)=0 , then

If acute angle between lines x^(2)-2hxy+y^(2)=0 is 60^(@) then h=