1.

The angle between the vectors vec(A) and vec(B) is theta. The value of triple Product vec(A).vec(B)xxvec(A) is :

Answer»

`A^(2)Bcostheta`
`A^(2)Bsintheta`
`A^(2)B`
Zero

Solution :`vec(B)xxvec(A)` has magnitude BA SIN `theta` and its direction is `bot` to both `vec(B)` and `vec(A)`.
`:. Vec(A).(vec(B)xxvec(A))=0`


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