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Question
If the lines represented by 5x2 – 3xy + ky2 = 0 are perpendicular to each other, find the value of k.
Sum
Solution
Here a = 5,
b = k
For perpendicular lines
a + b = 0
∴ 5 + k = 0
∴ k = – 5
shaalaa.com
Angle between lines represented by ax2 + 2hxy + by2 = 0
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