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If abs(bara)=4,abs(barb)=2 and the angl...

If ` abs(bara)=4,abs(barb)=2` and the angle between `bara` and `barb` is `(pi)/6`, then `(bara xx barb)^(2)` is equal to

A

48

B

16

C

9

D

none of these

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • If abs(bara)=4,abs(barb)=2 and the angle between bara and barb is (pi)/6 , then abs(bara xx barb)^(2) is equal to

    A
    48
    B
    16
    C
    8
    D
    none of these

  • IF |bara|=4,|barb|=2 and the angle between bara and barb is pi/6 then (bara times barb)^2=

    A
    64
    B
    16
    C
    `|bara|^2`
    D
    6

  • If bara is perpendicular to barb and barc,|bara|=2,|barb|=3,|barc|=4 and the angle between barb and barc is (2pi)/(3) . then [bara" "barb" " barc] is equal to

    A
    `4sqrt3`
    B
    `6sqrt3`
    C
    `12sqrt3`
    D
    `18sqrt3`

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