If the two pairs of lines `2x^2+6xy+y^2=0` and `4x^2+18xy+by^2=0` are equally inclined, then b=

If the two pair of lines 2x^(2)+6xy+y^(2)=0 and 4x^(2)+18xy+by^(2)=0 are equally inclined to each other then b=

Show that the pairs of straight lines 2x^2+6x y+y^2=0 and 4x^2+18 x y+y^2=0 are equally inclined,then b is equal to

Show that the pairs of straight lines 2x^2+6x y+y^2=0 and 4x^2+18 x y+y^2=0 are equally inclined

The pair of lines 2x^(2)+3xy+5y^(2)=0 and 4x^(2)+21xy+25y^(2)=0 are

If the pair of lines x^2+2xy+ay^2=0 and ax^2+2xy+y^2=0 have exactly one line in common, then the joint equation of the other two lines is given by

Show that the pair of lines 3x^(2)-5xy+2y^(3)=0 9x^(2)-25xy+4y^(2)=0 are equally inclined to each other.

Sum of values of lambda for which pair of lines x^(2)+2 lambda xy+2y^(2)=0 and (1+lambda)x^(2)-8xy+y^(2)=0 are equally inclined to each other is

The lines x^(2)-12xy+6y^(2)=0 are equally inclined to the line

If the pairs of lines x^(2)+2xy+ay^(2)=0 and ax^(2)+2xy+y^(2)=0 have exactly one line in common,then the joint equation of the other two lines is given by 3x^(2)+8xy-3y^(2)=03x^(2)+10xy+3y^(2)=0y^(2)+2xy-3x^(2)=0x^(2)+2xy-3y^(2)=0

If the pair of lines 3x^(2)+14xy+8y^(2)=0 and 2x^(2)+5xy-12y^(2)=0 have a common line then angle between other two lines is