Pair Of Straight Lines Question 89
Question: The straight lines represented by the equation $ 9x^{2}-12xy+4y^{2}=0 $ are
Options:
A) Coincident
B) Perpendicular
C) Parallel
D) Inclined at an angle of $ 45^{o} $
Show Answer
Answer:
Correct Answer: A
Solution:
Since $ h^{2}-ab $ i.e., $ {{(6)}^{2}}-9\times 4=0 $