1.

If bar(mu)=bar(a)-bar(b),bar(v)=bar(a)+bar(b),|bar(a)|=|bar(b)|=2 then |bar(mu)xx bar(v)|=……..

Answer»

`2sqrt(16-(bar(a).bar(b))^(2))`
`2sqrt(4(bar(a).bar(b))^(2))`
`sqrt(16-(bar(a).bar(b))^(2))`
`sqrt(4-(bar(a).bar(b))^(2))`

Answer :A


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