\( A \) person moved from \( A \) to \( B \) on a circular path a shown in figure. If the distan...

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\( A \) person moved from \( A \) to \( B \) on a circular path a shown in figure. If the distance travelled by him is \( 60 \mathrm{~m} \), then the magnitude of displacement would be:
(Given \( \cos 135^{\circ}=-0.7 \) )
(a) \( 42 \mathrm{~m} \)
(b) \( 47 \mathrm{~m} \)
- (c) \( 19 \mathrm{~m} \)
(d) \( 40 \mathrm{~m} \)
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