VITEEE 2015 Paper

Section: Mathematics

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Question : 103 of 120

Marks: +1, -0

If a =

^

i

−

^

j

+2

^

k

and b = 2

^

i

−

^

j

+

^

k

, then the angle θ between a and b is given by

tan−1 (1)
sin−1(
1
2
)
sec−1 (1)
tan−1(
1
√3
)

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