Class 11MathematicsPair of straight linesAngle between the pair of straight lines, Condition for parallel and perpendicular lines
EasyThe lines represented by $ax^2 + 2hxy + by^2 = 0$ are perpendicular to each other,if ........
- A$h^2 = a + b$
- B$a + b = 0$
- C$h^2 = ab$
- D$h = 0$
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