[" If angle between lines "],[2x^(2)+5xy+3y^(2)+6x+7y+4=0" is "tan^(-1)m" ,then "m=]

Angle between the lines 2x^(2)-7xy +3y^(2)=0 is

The angle between the lines x^(2) + 4xy + y^(2) = 0 is

The angle between the lines x^(2)+4xy+y^(2)=0 is

The angle between the lines 6x^(2)+5xy-6y^(2)=0 is

If the angle between two st lines represented by 2x^(2)+5xy+3y^(2)+7y+4=0 is tan^(-1) m then m equals

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

If the angle between the two lines represented by 2x^(2)+5xy + 3y^(2) + 6x + 7y + 4 =0. is tan^(-1) (m), then m is equal to

The angle between the lines in x^(2)-xy-6y^(2)-7x+31y-18=0 is

The angle between the lines in x^(2)-xy-6y^(2)-7x+31y-18=0 is