दो संदिशों \(\hat i + \hat j + \hat k\) और \(2\hat i + 3\hat j - \hat k\) के लंबकोणिक एकक लंबाई का सदिश क्या है?

1
\(\frac{{ - 4\hat i + 3\hat j - \hat k}}{{\sqrt {26} }}\)
2
\(\frac{{ - 4\hat i + 3\hat j + \hat k}}{{\sqrt {26} }}\)
3
\(\frac{{ - 3\hat i + 2\hat j - \hat k}}{{\sqrt {14} }}\)
4
\(\frac{{ - 3\hat i + 2\hat j + \hat k}}{{\sqrt {14} }}\)

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