Show that vector A=(4,0, -1), B= (1, 3, 4) and C= ( -5, -3, -3) form the sides of a triangle. is this angel triangle? calculate the area of the triangle.
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Show that vector A=(4,0, -1), B= (1, 3, 4) and C= ( -5, -3, -3) form the sides of a triangle. is this angel triangle? calculate the area of the triangle.
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