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VECTOR ALGEBRA | LINEAR COMBINATION LINEAR INDEPENDENCE AND LINEAR DEPENDENCE | Subtraction of vectors in terms of its components, The lines joining the vertices of a tetrahedron to the centroids of opposite faces are concurrent., Collinearity for more than two points, Multiplication of a vector by a scalar in terms of components, Equality of vectors in terms of components, Show that the three points `A(-2, 3,5); B(1, 2, 3)` and `C(7, 0, -1)` are collinear., If `A; B; C` have position vectors `(2, 0, 0); (0, 1, 0); (0, 0, 2)` Show that triangle ABC is isosceles., Find the unit vector in the direction of `3i - 6j + 2k`

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