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JEE Main2006MathematicsStraight LinesActual

The two lines x=a y+b, z=c y+d ; and x=a^ y+b^ , z=c^ y+d^ are perpendicular to each other if

Options

  1. Aaa ^ + cc ^ =-1
  2. Baa ^ + cc ^ =1
  3. Ca a^ + c c^ =-1
  4. Da a^ + c c^ =1

Correct answer

A. aa ^ + cc ^ =-1

Step-by-step solution

Equation of lines x-b a =y= z-d c x-b^ a^ =y= z-d^ c^ Lines are perpendicular a a^ +1+c c^ =0

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