KEAM 2021 Math Solved Paper

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Question : 38 of 120

Marks: +1, -0

The angle between the lines

→

r

=

^

i

+4

^

k

+λ(2

^

i

+

^

j

−

^

k

) and

→

r

=2

^

i

−

^

j

+3

^

k

+µ(3

^

i

+

^

k

) is

cos−1(
√5
6
)
cos−1(
√15
6
)
cos−1(
1
12
)
cos−1(
√15
15
)
cos−1(
√3
30
)

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