1.

Let vec(a)=hat(i)+2hat(j)+hat(k),vec(b)=hat(i)-hat(j)+hat(k)andvec(c)=hat(i)-hat(j)-hat(k). A vector in the plane of vec(a)andvec(b) whose projection on vec(c)" is "(1)/(sqrt(3)), is

Answer»

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

Answer :A


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