Why is it so that If delta is 0 then,h^2-ab>0 real interesting linesh^2-ab=0 parallell lines?
Why is it so that If delta is 0 then,
h^2-ab>0 real interesting lines
h^2-ab=0 parallell lines?
Somya , 6 Years ago
Grade 12
Analytical Geometry> Why is it so that If delta is 0 then, h^2...
1 Answers
Arun
Last Activity: 6 Years ago
Dear student
As we see angle between two lines
tan theta = 2 sqrt(h^2 – ab) / (a+ b)
now if h^2 – ab > 0 then lines are real intersecting as angle is non zero. but if h^2 – ab = 0 yhen anhle are zero hence coincident lines
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