यदि P और Q के स्थिति सदिश क्रमशः 3bari+5...

यदि `P` और `Q` के स्थिति सदिश क्रमशः `3bari+5barj-7bark` तथा `3bari-4barj+bark` हों तो `|bar(PQ)|` ज्ञात कीजिए तथा `bar(PQ)` की दिशा में एकांक सदिश ज्ञात कीजिए।

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