3i 2j 3k and i 6j k are the position vectors of points A

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Example 27 If i j k, 2i 5j, 3i 2j 3k and i 6j k are the position vectors of points A, B, C and D respectively, then find the angle between AB and CD . Deduce that AB and CD are collinear.
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Example 27 If i j k, 2i 5j, 3i 2j 3k and i 6j k are the position vectors of points A, B, C and D respectively, then find the angle between AB and CD . Deduce that AB and CD are collinear. 2i 5j 3i 2j 3k and i 6j k are the position [...]
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Tags: 2i 5j , 3i 2j 3k and i 6j k are the position vectors of points A , B , C and D respectively , Example 27 If i j k , then find the angle between AB and CD . Deduce that AB and CD are collinear. ,