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1. Show that the three lines with direction cosines 12/3, -3/13, -4/13, 4/13, 12/13, 3/13, 3/13, -4/13, 12/13 are mutually perpendicular.

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1. Show that the three lines with direction cosines 12/3, -3/13, -4/13, 4/13, 12/13, 3/13, 3/13, -4/13, 12/13 are mutually perpendicular. -3/13 -4/13 1. Show that the three lines with direction cosines 12/3 12/13 12/13 are mutually perpendicular. 3/13 November 15, 2021 Category: Chapter 11 - 3D Geometry , Maths , NCERT Exemplar Class 12 [...]

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