AP EAMCET · Maths · Pair of Lines
If the pairs of straight lines \(x^2-2 p x y-y^2=0\) and \(x^2-2 q x y-y^2=0\) be such that each pair bisects the angle between the other pair, then
- A \(p q=1\)
- B \(p q=-1\)
- C \(p q=2\)
- D \(p q=-2\)
Answer & Solution
Correct Answer
(B) \(p q=-1\)
Step-by-step Solution
Detailed explanation
Given that, the pairs of straight lines \(x^2-2 p x y-y^2=0\) and \(x^2-2 q x y-y^2=0\) bisects the angle between other pairs. Since, we know that the pair of bisectors of the angle between the pair of straight lines \(a x^2+2 h x y+b y^2=0\) is…
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