Question

16.Two vertices of a triangle have position vectors 3iº + 4j- 4k and 2i +3 j + 4k.
If the position vector of the centroid is i' + 2 *j + 3k*, then the position vector of the
third vertex is
(a) --21* - j* +9k
(b) -21* - j* - 6k
(c) 2i" - 1' + 6k
(d) - 2i* + jº + 6k​

Answer 1

Answer:

Find the centroid of the triangle ABC , whose vertices are A(‑1,0), B(5, ‑2), C(8,2) *?

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