Let a̅, b̅ and c̅ be three mutually perpendicular vectors each of unit magnitude.
If A̅ = a̅ + b̅ + c̅, B̅ = a̅ – b̅ + c̅ and C̅ = –a̅ + b̅ + c̅, then which one of the following is correct ?
Mathematics
2018
NDA Mathematics 2018
NDA 2018
Options
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