The angle between the lines `x^(2)+2xysec theta+y^(2)=0` is

Angle between the lines x^(2)+2xysecalpha+y^(2)=0 is

Joint equation of bisectors of angles between the two lines x^(2)+2xy.cot theta+y^(2)=0 is

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

11.The acute angle between the pair of lines x^(2)+2xy cot theta+y^(2)=0 is

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

If theta is the angle between the lines ax^(2)+2hxy+by^(2)=0, then angle between x^(2)+2xy sec theta+y^(2)=0 is

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

The line y=3x bisects the angle between the lines ax^2+2axy+y^2=0 if a =

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

Measure of angle between the two lines (x^(2)+y^(2))sin theta+2xy=0 is