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If a,b and c are three mutually perpendi...

If a,b and c are three mutually perpendicular vectors of equal magnitude then the angle `theta` which a + b + c makes with any one of three given vectors is given by

A

`cos^(-1) (1/sqrt3)`

B

`cos^(-1) (1/3)`

C

`cos^(-1) (2/sqrt3)`

D

None of the above

Text Solution

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The correct Answer is:
A
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