CLASS 12 MATHS CHAPTER 11-THREE DIMENSIONAL GEOMETRY

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Exercise 11.1 Solve The Following Questions. Question1.If a line makes angles 90°, 135°, 45° with x ,y and z axes respectively, find its direction cosines. Solution : A-line makes 90°, 135°, 45°with x, y and z  axes respectively. Therefore, Direction cosines of the line are cos 90°, cos135°, and cos45° ⇒ Direction cosines of the …

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