document.write( "Question 1204849: Find the largest angle in a triangle with sides 6.0 cm, 7.0 cm and 8.0 cm. \n" ); document.write( "
Algebra.Com's Answer #841372 by MathLover1(20850)\"\" \"About 
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given sides:\r
\n" ); document.write( "\n" ); document.write( "\"a=6.0\"
\n" ); document.write( "\"b=7.0\"
\n" ); document.write( "\"c=8.0\"\r
\n" ); document.write( "\n" ); document.write( "recall: The longest side in a triangle is opposite the largest angle.\r
\n" ); document.write( "\n" ); document.write( "so, it will be angle \"gamma\"\r
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\n" ); document.write( "\n" ); document.write( "Solution: using Law of Cosine\r
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\n" ); document.write( "\n" ); document.write( "\"+gamma=cos%5E-1%28%28a%5E2%2Bb%5E2-c%5E2%29%2F%282ab%29%29\"\r
\n" ); document.write( "\n" ); document.write( "\"+gamma=cos%5E-1%28%286.0%5E2%2B7.0%5E2-8.0%5E2%29%2F%282%2A6.0%2A7.0%29%29\"\"75.52249\"°\r
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