Angle Bisector Length Vectors (Jee Mains) | ExamDuo
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Vector Algebra and Components
Medium
Angle Bisector Length Vectors
The position vectors of the vertices
A
,
B
and
C
of a triangle are
2
^
i
−
3
^
j
+
3
^
k
,
2
^
i
+
2
^
j
+
3
^
k
and
−
^
i
+
^
j
+
3
^
k
respectively. Let
l
denotes the length of the angle bisector
AD
of
∠
BAC
where
D
is on the line segment
BC
, then
2
l
2
equals :
Ask about this question
SELECT ONE OPTION
A
49
B
42
C
50
D
45
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