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NCERT Solutions for Class 12 Mathematics Mathematics Part Ii Chapter 11 Three Dimensional Geometry
Three Dimensional Geometry Here is the CBSE Mathematics Chapter 11 for Class 12 students. Summary and detailed explanation of the lesson, including the definitions of difficult words. All of the exercises and questions and answers from the lesson's back end have been completed. NCERT Solutions for Class 12 Mathematics Three Dimensional Geometry Chapter 11 NCERT Solutions for Class 12 Mathematics Three Dimensional Geometry Chapter 11 The following is a summary in Hindi and English for the academic year 2025-26. You can save these solutions to your computer or use the Class 12 Mathematics.
Question 1
If a line makes angles 90°, 135°, 45° with x, y and z-axes respectively, find its direction cosines.
Solution
Let l, m, n be the direction cosines of the line with direction angles 90°, 135°, 45°.
direction cosines are 0, 
direction cosines are 0, 
with each of y-axis and z-axis. Find the angle made by it with x-axis. Sponsor Area
Mock Test Series
Mock Test Series