Find: BC - Vidyadip

Question

Find$: \text{BC}$

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Answer

From right triangle $\text{ABC}$
$\tan 30^{\circ}=\frac{ AB }{ BC } $
$ \frac{1}{\sqrt{3}}=\frac{12}{ BC } $
$ \text{BC} =12 \sqrt{3}\ cm .$

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