Math Question
![Find the missing side or angle.
Round to the nearest tenth.
\[
\begin{array}{l}
A=78^{\circ} \\
b=2 \\
c=4 \\
a=[?]
\end{array}
\]
Enter](https://d3hlidq5bf9vg0.cloudfront.net/app-server-student/2022/4/21/19394f7a-185d-4786-af3a-6d091a8a6e42.png "Find the missing side or angle.
Round to the nearest tenth.
\[
\begin{array}{l}
A=78^{\circ} \\
b=2 \\
c=4 \\
a=[?]
\end{array}
\]
Enter")
Solution
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