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Show that the line joining the origin to the point (2, 1, 1) is perpendicular to the line determined by the points (3, 5, -1), (4, 3, -1) |
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Answer» the direction ratios of the `2^nd` line are 4-3, 3-5, 1-+1 i.e., 1, -2, 0 SINCE `2xx1+1xx-2+1xx0 = 2-2+2 = 0`, the two LINES are perpendicular |
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