1.

If the angle between the vectors vec(A) and vec(B) is theta, the value of the product (vec(B)xxvec(A)).vec(A) is equal to:

Answer»

`BA^(2)sintheta`
`BA^(2)COSTHETA`
`BA^(2)SINTHETACOSTHETA`
zero

Solution :Here `vec(C )=(vec(B)xxvec(A))=BAsintheta`then
`vec(c ).vec(A)=(Basintheta)Acos90^@`=zero


Discussion

No Comment Found

Related InterviewSolutions