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AP EAMCET · Maths · Pair of Lines

Find the equation of pair of straight lines that bisect the angles between the lines represented by \(a x^2+2 h x y+b y^2=0\).

  1. A \(\frac{x^2+y^2}{a+b}=\frac{x y}{h}\)
  2. B \(\frac{x^2+y^2}{a-b}=\frac{x y}{h}\)
  3. C \(\frac{x^2+y^2}{a-b}=\frac{h}{x y}\)
  4. D \(\frac{x^2-y^2}{a-b}=\frac{x y}{h}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\frac{x^2-y^2}{a-b}=\frac{x y}{h}\)

Step-by-step Solution

Detailed explanation

The equation of pair of straight lines that bisect the angles between the lines represented by \(\begin{aligned} a x^2+2 h x y+b y^2 & =0 \\ \text { is } \frac{x^2-y^2}{a-b} & =\frac{x y}{h}\end{aligned}\) Hence, option (d) is correct.