Find the magnitude of the vector \(\bar{a} = 3\hat{i} + \hat{j} + 7\hat{k}\)
Q.2 (ii) Find the magnitude of the vector \(\bar{a} = 3\hat{i} + \hat{j} + 7\hat{k}\)
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Answer: \(|\bar{a}| = \sqrt{59}\)
\(|\bar{a}| = \sqrt{3^2 + 1^2 + 7^2} = \sqrt{9 + 1 + 49} = \sqrt{59}\).
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· 28 Oct 2026
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