KCET2009MathematicsPair of Lines
The angle between the pair of lines x²+2 x y-y²=0 is
Options
- A6
- B2
- C0
- D3
Correct answer
B. 2
Step-by-step solution
Given pair of lines is x²+2 x y-y²=0 Here, a =1, ~b =-1, ~h =1 Now, a+b=1-1=0 Hence, given pair of lines are perpendicular.