Example 29 - Chapter 11 Class 12 - Show lines are coplanar - Examples

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Slide43.JPG

  1. Chapter 11 Class 12 Three Dimensional Geometry
  2. Serial order wise
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Example 29 Show that the lines + = = + and + = = + are coplanar. Two lines 1 1 = 1 1 = 1 1 and 2 2 = 2 2 = 2 2 are coplanar if = 0 Now, 2 1 2 1 2 1 1 1 1 2 2 2 = + + + + Adding column 3 to column 1, = 2( ) + 2 + 2 + Taking 2 common from Column 1 = 2 + + + = 2 0 = 0 Therefore, the given two lines are coplanar .

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.