If `x^2-2p x y-y^2=0` and `x^2-2q x y-y^2=0` bisect angles between each other, then find the condition.

If x^(2)-2pxy-y^(2)=0 and x^(2)-2qxy-y^(2)=0 bisect angles between each other,then find the condition.

If pairs of straight lines x^2-2pxy-y^2=0 and x^2-2qxy-y^2=0 be such that each pair bisects the angle between the other pair ,then

If the paris x^(2)-2pxy-y^(2)=0 and x^(2)-2qxy-y^(2)=0 are such that one pair bisects the angle between the other and p=3 then q=

If the pair of straight lines x^(2)-2pxy-y^(2)=0and x^(2)-2qxy-y^(2)=0 are such that each pair bisects the angle between the other pair , then prove that pq=-1 .

If the pairs of straight lines x^(2)-2pxy-y^(2)=0 and x^(2)-2qxy-y^(2)=0 be such that each pair bisects the angle between the other pair, then

If the pair of straight lines x^(2)-2pxy-y^(2)=0 and x^(2)-2qxy-y^(2)=0 be such that each pair bisects the angle between the other pair,then

If the pairs of lines x^(2)-2pxy-y^(2)=0 and x^(2)-2qxy-y^(2)=0 be such that each pair bisects the angle between the other pair then

If the pair of straight lines x^(2)-2pxy-y^(2)=0and x^(2)-2qxy-y^(2)=0 are such that each pair bisects the angle between the other pair , then prove that pq=-1 .

If the pair of straight lines x^(2)-2pxy-y^(2)=0and x^(2)-2qxy-y^(2)=0 are such that each pair bisects the angle between the other pair , then prove that pq=-1 .

If the pair of straight lines ax^(2)-2pxy-y^(2)=0and x^(2)-2qxy-y^(2)=0 are such that each pair bisects the angle between the other pair , then prove that pq=-1 .