1.

Three vectors vec(a),vec(b)andvec(c) are of the same length and the angle between any two of them is the same. If vec(a)=hat(i)+hat(j)andvec(b)=hat(j)+hat(k)," then "vec(c) is

Answer»

`-(1)/(3)(hat(i)-4hat(j)+hat(k))`
`hat(i)+hat(k)`
`-(1)/(3)(-hat(i)+4hat(j)+hat(k))`
`(1)/(7)(hat(i)+2HAT(j)+3hat(k))`

ANSWER :A::B


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