document.write( "Question 983867: Find C in the following triangle, if it exist.
\n" ); document.write( "a= 31m, b=42m, c=60m
\n" ); document.write( "(Enter your answer rounded to the nearest ten minutes.)\r
\n" ); document.write( "\n" ); document.write( "Thank you.
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Algebra.Com's Answer #604650 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "\"a=+31m\",
\n" ); document.write( "\"b=42m\",
\n" ); document.write( "\"c=60m\"\r
\n" ); document.write( "\n" ); document.write( "Use the Cosine Law:\r
\n" ); document.write( "\n" ); document.write( "\"c%5E2+=++a%5E2+%2B+b%5E2++-+2ab%2Acos%28C%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%2860m%29%5E2+=++%2831m%29%5E2+%2B+%2842m%29%5E2++-+2%2831m%29%2842m%29%2Acos%28C%29\"\r
\n" ); document.write( "\n" ); document.write( "\"3600m%5E2+=+961m%5E2+%2B+1764m%5E2++-+2604m%5E2%2Acos%28C%29\"\r
\n" ); document.write( "\n" ); document.write( "\"3600m%5E2+=+2725m%5E2++-+2604m%5E2%2Acos%28C%29\"\r
\n" ); document.write( "\n" ); document.write( "\"3600m%5E2+-2725m%5E2+=+-+2604m%5E2%2Acos%28C%29\"\r
\n" ); document.write( "\n" ); document.write( "\"875m%5E2+=+-+2604m%5E2%2Acos%28C%29\"\r
\n" ); document.write( "\n" ); document.write( "\"875m%5E2%2F-+2604m%5E2=cos%28C%29\"\r
\n" ); document.write( "\n" ); document.write( "\"cos%28C%29=-+0.3360215053763441\"\r
\n" ); document.write( "\n" ); document.write( "\"C=109.63466712778866\"°\r
\n" ); document.write( "\n" ); document.write( "\"C=109.6347\"°\r
\n" ); document.write( "\n" ); document.write( "\"C=109\"°\"38\"'\r
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