Answer
$a \approx13.74$, $c \approx14.62$, $A= 70^\circ$.
Work Step by Step
Given $b=5, B=20^\circ$, we have $a=b\ cotB=5cot20^\circ\approx13.74$, $c=b\ cscB=5csc20^\circ\approx14.62$, $A=90^\circ-B=70^\circ$.
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