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If veca " and " vecv are the two vectors...

If `veca " and " vecv` are the two vectors such that `|veca| = 3sqrt3,|vecb| = 4 " and " |veca + vecb|= sqrt7` , then the anlge between `veca` and `vecb` is

A

`120^@`

B

`60^@`

C

`30^@`

D

`150^@`

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IPUCET PREVIOUS YEAR PAPERS-GGSIPU MATHEMATICS 2007-MCQ
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