Question
Question: The points (3, 2, 0), (5, 3, 2) and (–9, 6, –3), are the vertices of a triangle ABC. AD is the inter...
The points (3, 2, 0), (5, 3, 2) and (–9, 6, –3), are the vertices of a triangle ABC. AD is the internal bisector of ŠBAC which meets BC at D, then the co-ordinates of D, are
A
(1617,1657,819)
B
(819,1657,1617)
C
(0,0,1617)
D
(1617,0,0)
Answer
(819,1657,1617)
Explanation
Solution
AB =4+1+4 = 3
AC = 144+16+9= 13
D(3+13–27+65,3+1318+39,3+13−9+26)=(819,1657,1617)