Conic Sections Question 525
Question: The line $ lx+my+n=0 $ will be a tangent to the hyperbola $ \frac{x^{2}}{a^{2}}-\frac{y^{2}}{b^{2}}=1 $ , if
[MP PET 2001]
Options:
A) $ a^{2}l^{2}+b^{2}m^{2}=n^{2} $
B) $ a^{2}l^{2}-b^{2}m^{2}=n^{2} $
C) $ am^{2}-b^{2}n^{2}=a^{2}l^{2} $
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
It is obvious.
BETA
