Supplementary Exercise Q8 - Find value of if points A, B, C, D - Supplementary examples and questions from CBSE

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  1. Chapter 10 Class 12 Vector Algebra
  2. Serial order wise
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Supplementary Exercise Q8 Find the value of if the point A ( 1, 4, 3), B = (3, , 5), C( 3, 8, 5) and D ( 3, 2, 1) are coplanar Four points A, B, C, D are coplanar if the three vectors , and are coplanar. i.e. , , = 0 , , = 4 ( 4) 2 2 4 2 2 2 4 0 = 4 4 4 ( 2 2) ( 4) 2 4 ( 2 2) + ( 2) 2 2 ( 2 4) 0 = 4 16 4 ( 4) 8 4 2 4+8 0 = 4(12) ( 4)( 12) 2 (12) 0 = 48 + 12 48 24 12 = 24 = 24 12 = 2

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