- Vector \(\mathbf{v_1}\) from point \((3, 1, 8)\) to \((1, -1, 12)\):
\[
\mathbf{v_1} = (1 - 3, -1 - 1, 12 - 8) = (-2, -2, 4)
\]
- Vector \(\mathbf{v_2}\) from point \((3, 1, 8)\) to \((5, 0, 7)\):
\[
\mathbf{v_2} = (5 - 3, 0 - 1, 7 - 8) = (2, -1, -1)
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