UPSC NDA I 2019 Mathematics Solved Paper

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Question : 99 of 120

Marks: +1, -0

The sine of the angle between vectors

→

a

= 2

^

i

− 6

^

j

-3

^

k

and

→

b

= 4

^

i

+3

^

j

-

^

k

[NDA I 2019]

1
√26
5
√26
5
26
1
26

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