1.

If vec(u)= vec(a)- vec(b), vec(v)= vec(a) + vec(b) and |vec(a)| =|vec(b)|=2, (vec(a), vec(b)) =(pi)/(3), then |vec(u) xx vec(v)|=

Answer»

`SQRT3`
`2 sqrt3`
`3 sqrt3`
`4 sqrt3`

ANSWER :D


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