A, -1), B(5, 3), C(-3, 11) are the vertices of
ABC. (1) Find AB and AC. (2) Bisector of A
intersects
BC
in D. (3) Find the coordinates of D.
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Answer:
Given: The vertices of a triangle are A (1, 2, 3), B (0, 4, 1), C (-1, -1, -3) By using the distance formula,(see the above pic for distance formula)
So, AB/AC = 3/7
AB: AC = 3:7
BD: DC = 3:7
Then, m = 3 and n = 7
B(0, 4, 1) and C(-1, -1, -3) of D by using section formula is given as ∴ see the above 2pic for the ans of section formula
The coordinates of D are (-3/10, 5/2, -1/5).
Step-by-step explanation:
the above pics are the distance formula and section formula and dont forget that to write.
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