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Position vector hatk is rotated about t...

Position vector `hatk` is rotated about the origin by angle `135^(@)` in such a way that the plane made bt it bisects the angle between `hati and hatj` . Then its new position is

A

`+-(hati)/(sqrt(2))+-(hatj)/(sqrt(2))`

B

`+-(hati)/(2)+-(hatj)/(2)-(hatk)/(sqrt(2))`

C

`(hati)/(sqrt(2))-(hatk)/(sqrt(2))`

D

none of these

Text Solution

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The correct Answer is:
B
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