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A rectangular strain rosette, shown in figure, gives following readings in a strain measurement task, $\epsilon 1 = 1000\times 10^{-6}$ , $\epsilon 2 = 800\times 10^{-6}$ and $\epsilon 3 = 600\times 10^{-6}$ . The direction of the major principal strain with respect to gauge

(a)$0^{0}$         (b)$15^{0}$         (c)$30^{0}$        (d)$45^{0}$

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