1.

a is perpendicular to both b and c . The angle between b and c is (2 pi)/(3). If |a| = 2, |b| = 3, |c| = 4, then c. (a xx b) is equal to

Answer»

`18 sqrt(3)`
`12 sqrt(3)`
`8 sqrt(3)`
`6 sqrt(3)`

ANSWER :B


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