Θ is the angle between one of the bisectors and one of the lines. If |tanθ| <1, the bisector is the acute angle bisector
True
If |tanθ|<1, then |2θ|<90∘
Here θ is the angle between one of the bisectors and given lines. |2θ| is the angle between L1 & L2 .
it is less than 90∘ means it is the acute angle bisector.