document.write( "Question 339482: A triangle has sides a=2 and b=3 and angle C= 40 degrees. What is the length of side c \n" ); document.write( "
Algebra.Com's Answer #243258 by jrfrunner(365)\"\" \"About 
You can put this solution on YOUR website!
use the law of cosines
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\n" ); document.write( "\"c%5E2=a%5E2%2Bb%5E2-2abcosc\"
\n" ); document.write( "\"c%5E2=2%5E2%2B3%5E2-2%2A2%2A3%2Acos%2840%29=4%2B9-12%2Acos%2840%29=3.807\"
\n" ); document.write( "\"c=sqrt%283.807%29=1.951\"
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