document.write( "Question 478552: A triangle has sides of length 5,8,and 10. What is the measure of its largest angle? \n" ); document.write( "
Algebra.Com's Answer #327885 by Alan3354(69443)\"\" \"About 
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A triangle has sides of length 5,8,and 10. What is the measure of its largest angle?
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\n" ); document.write( "It's opposite the longest side.
\n" ); document.write( "Use the Cosine Law:
\n" ); document.write( "\"c%5E2+=+a%5E2+%2B+b%5E2+-+2ab%2Acos%28C%29\"
\n" ); document.write( "\"10%5E2+=+5%5E2+%2B+8%5E2+-+5%2A8%2Acos%28C%29\"
\n" ); document.write( "cos(C) = (100 - 89)/-40 = -11/40
\n" ); document.write( "C = ~ 105.96 degs
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