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TS EAMCET · Maths · Straight Lines

The straight line \(x+y+1=0\) bisects an angle between the pair of lines of which one is \(2 x+3 y-4=0\). Then, the equation of the other line is

  1. A \(3 x-2 y+9=0\)
  2. B \(3 x-2 y-9=0\)
  3. C \(3 x+2 y+9=0\)
  4. D \(x-y-1=0\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(3 x+2 y+9=0\)

Step-by-step Solution

Detailed explanation

Let slope of required line \(=m\) The angle between bisector and new line will be same as between bisector \(x+y+1\) and line \(2 x+3 y-4=0\) \(\therefore\) Angle between bisector \(x+y+1=0\) and new line is \[ \tan \theta=\left|\frac{m+1}{1-m}\right| \]…
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