1. Tardigrade
  2. Question
  3. Mathematics
  4. The two lines l x+my=n and l'x+m'y=n' are perpendicular if

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The two lines $l x+my=n$ and $l'x+m'y=n'$ are perpendicular if

KCETKCET 2020

Solution:

Product of slopes $= -1$
$⇒ ll'' + mm' = 0$