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     EduGorilla 
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    Let,,  be unit vectors, such that.= ., and the angle between b and c is 30o. Then

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    1.  =  (x)
    2. =  +
    3.  =  2 (x)
    4. none of these
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Reply To: Let,,  be unit vectors, such that.= ., and the angle between b and c is 30o. Then….
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