Let A (3,2,0), B (5, 3.2), C (-9.6. – 3) be three points forming a triangle. AD, the bisector
of 2 BAC, meets BC in D. Find the coordinates of the point D.
please give me answer fast .
Answers
Answered by
0
Answer:
According to question,
AB=
4+1+4
=3
AC=
144+16+9
=13
BD:DC=AB:AC=3:13
D=(
3+13
3(−9)+13(5)
,
3+13
3(6)+13(3)
,
3+13
3(−3)+13(2)
)
=(
16
−38
,
16
57
,
16
17
)
∴(
8
−19
,
16
57
,
16
17
)
So,thecorrectoptionisA.
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