Pair Of Straight Lines Question 69

Question: The angle between the pair of lines given by equation $ x^{2}+2xy-y^{2}=0 $ , is

[MNR 1990]

Options:

A) p/3

B) p/6

C) p/2

D) 0

Show Answer

Answer:

Correct Answer: C

Solution:

Using condition $ a+b=0 $ .