KEAM 2014 Math Paper

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Question : 1 of 120

Marks: +1, -0

If

→

a

=

⋀

i

+2

⋀

j

+2

⋀

k

, |

→

b

|=5 and the angle between

→

a

and

→

b

is

π

6

, then the area of the triangle formed by these two vectors as two sides is

15
4
15
2
15
15√3
2
15√3

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