यदि सदिश \(\overrightarrow{A}=x\widehat{i}+0.5\widehat{j}-0.2\widehat{k}\) एक इकाई सदिश है तो x का मान ज्ञात करें।

1
√0.29
2
√0.81
3
√0.35
4
√0.71

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