MathematicsEasyHigh School (11–12)Vectors and Three-Dimensional Geometry › Three-Dimensional GeometryA-LevelIB
Created by StemPy LabA teacher draws two lines on a model of three-dimensional axes made of wire and says that they are skew. Which description of skew lines is correct?
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← Two cables hang in a workshop. The first has direction ratios (3, -6, 9) and the second has direction ratios (-2, 4, -6). An apprentice is asked how the two cables are related. Which statement is correct?A line passes through (1, 0, 2) with direction ratios (2, 1, -1). A second line passes through (0, 2, 1) with direction ratios (1, -1, 3). What is the value of (a₂ - a₁) · (b₁ × b₂), and what does it show? →
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