KCET 2015 Math Solved Paper

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Question : 15 of 60

Marks: +1, -0

If direction cosines of a vector of magnitude 3 are

2

3

,−

a

3

,

2

3

and a > 0, then vector is

2
⋀
i
+
⋀
j
+2
⋀
k
2
⋀
i
−
⋀
j
+2
⋀
k
⋀
i
−2
⋀
j
+2
⋀
k
⋀
i
+2
⋀
j
+2
⋀
k

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