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माना a = -hat(i) + 2hat(j) + 2hat(k) तथ...

माना `a = -hat(i) + 2hat(j) + 2hat(k)` तथा `b = -2hat(i) + hat(j) + 2hat(k)` दो सदिश हैं, तब
a तथा b दोनों पर लंबवत सदिश होगा

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