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If →a=(2,1,−1),→b=(1,−1,0),→c=(5,−1,1), then the unit vector parallel to →a+→b−→c in the opposite direction is |
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Answer» If →a=(2,1,−1),→b=(1,−1,0),→c=(5,−1,1), then the unit vector parallel to →a+→b−→c in the opposite direction is |
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