1. From the given figure, find the value of \(x\) and \(∠COB\).
 
51.svg
 
\(x\) =
 
\(∠COB\) = °.
 
2. From the given figure if \(∠COB\) is 47° and \(∠AOC\) = 6\(x\), then find the value of \(x\).
 
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\(x\) = .