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vec(P)+vec(Q) is a unit vector along x-a...

`vec(P)+vec(Q)` is a unit vector along x-axis. If `vec(P)= hat(i)-hat(j)+hat(k)`, then what is `vec(Q)`?

A

`hat(j) + hat(k)`

B

`hat(j) - hat(k)`

C

`hat(i) + hat(j) + hat(k)`

D

`hat(i) + hat(j) - hat(k)`

Text Solution

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The correct Answer is:
B
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