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CBSE Class 12 Math 2019 All India Set 1 Solved Paper

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Question : 22
Total: 29
Let
→
a
,
→
b
 and
→
c
 be three vectors such that |
→
a
|=1,|
→
b
|=2 and |
→
c
|=3. If the projection of
→
b
 along
→
a
 is equal to the projection of
→
c
 along
→
a
; and
→
b
,
→
c
 are perpendicular to each other, then find |3
→
a
−2
→
b
+2
→
c
|
Solution:  
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