KCET 2007 Math Solved Paper

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Question : 7 of 60

Marks: +1, -0

→

OA

and

→

BO

are two vectors of magnitudes 5 and 6 respectively. If ⌊BOA=60∘., then

→

OA

⋅

→

OB

is equal to

15
0
15√3
−15

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