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A and B are two vectors and theta is the...

A and B are two vectors and `theta` is the angle between them, if `|vecAxxvecB|= sqrt3 (vecA. vec B)` the value of `theta` is :

A

`90^@`

B

`60^@`

C

`45^@`

D

`30^@`

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Knowledge Check

  • Let vecaandvecb be two unit vectors and theta is the angle between them Then veca+vecb is a unit vector if

    A
    `theta=(pi)/(4)`
    B
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    C
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    D
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  • If 2 sin theta = sqrt3, then the value of theta is

    A
    `90^(@)`
    B
    `30^(@)`
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    `45 ^(@)`
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    `60^(@)`

  • If theta is the angle between two vectors vecaandvecb then veca*vecbge0 only when

    A
    `0ltthetalt(pi)/(2)`
    B
    `0lethetale(pi)/(2)`
    C
    `0ltthetaltpi`
    D
    `0lethetalepi`

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