KEAM 2014 Math Paper

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Question : 8 of 120

Marks: +1, -0

If the direction cosines of a vector of magnitude 3 are

2

a

,−

a

3

,

2

3

,a>0, then the vector

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

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