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CBSE Class 12 Math 2019 Delhi Set 1 Solved Paper

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Question : 22 of 29
Marks: +1, -0
If
^
i
+
^
j
+
^
k
,2
^
i
+5
^
j
,3
^
i
+2
^
j
−3
^
k
 and
^
i
−6
^
j
−
^
k
 respectively are the position vectors of points A,B,C and D, then find the angle between the straight lines AB and CD. Find whether
→
AB
 and
→
CD
 are collinear or not.
Solution:  
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