Question

If the angle between the pair of straight lines ax square+2hxy+by square=0 then show that cos tita = |a+b|÷✓(a-b) whole square+4h square
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Answer 1

Answer:

2

Step-by-step explanation:

If one of the lines of the pair ax2 + 2hxy + by2 = 0 bisects the angle between positive directions of the axes, then a,b,h satisfy the relation. One of the lines bisects the angle between positive directions of the axes. The bisector of coordinate axes in the positive direction is y = x. Hence option (2) is the answer