Angle Bisectors
Angle Bisectors: Overview
This topic covers concepts, such as, Bisectors of the Angles between Two Lines, Equation of Bisector between Two Lines, To Discriminate between Acute and Obtuse Angle Bisector & Bisector of the Angle between Two Lines Containing a Given Point etc.
Important Questions on Angle Bisectors
Given vertices of a triangle, find the equation of the perpendicular dropped from to the interior bisector of the angle

Equation of angle bisector between the lines and are

If are two intersecting straight lines, then show that the equations of the bisectors of the angles between the lines are:
and .

The internal and external bisectors of the angles between two lines and meet -axis and -axis at and respectively. Find the length of the line segment .

Find the equations of the internal bisectors of the angles of the triangle formed by the straight line and the axes of co-ordinates. Then verify that the internal bisectors of a triangle are concurrent

The vertices of a triangle are and Then, the equation of the bisector of the is

If the pairs of straight lines and bisect the angles between each other, then which of the following is correct?

If are the vertices of the triangle then find the equation of angle bisector through where units are the lengths of the sides opposite to the vertices respectively.

The incident ray is along the line and the reflected ray is along the line . Find the equation of mirrors.

Find the equation of the bisector of the obtuse angle between the lines and .

If and are vertices of , then the equation of the internal angle bisector of

The equation of the angle bisector of the acute angle between the lines and is given by

If then find the bisector of angle between the lines represented by the equation (where is slope of line )

Comprehension Question: 5 to 6
In a given and AD is angle bisector of angle so that and then
tan C equals

The locus of the point which is equidistant from and is

The equation of bisector of the acute angle formed between the lines and has the equation is

Equation of angle bisector between the lines and are

The equation of the bisector of the angle between the lines which contains the point is

Equation of angle bisectors between and - axes are

The equation of the line which bisects the obtuse angle between the lines and , is
