1.

If vecu=veca-vecb,vecv=veca+vecb and |veca|=|vecb|=2, then |vecuxx vecc| is :

Answer»

`2sqrt(16 - (veca.vecb)^(2))`
`2sqrt(4-(veca.vecb)^(2))`
`SQRT(16-(veca.vecb)^(2))`
`sqrt(4-(veca.vecb)^(2))`

ANSWER :A


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