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If |vecA xx vecB| = sqrt(3) vecA .vecB t...

If `|vecA xx vecB| = sqrt(3) vecA .vecB` then the value of `|vecA xx vecB|` is :

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The correct Answer is:
B
`ABsin theta= Ab cos thetasqrt(3)`
`tan theta = sqrt(3) " " rArr theta = 60^(@)`
`|(vecA + vecB)|= sqrt(A^(2)+ B^(2)+ 2AB cos 60^(@))`
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