document.write( "Question 1138356: Suppose that two sides of a triangle have lengths 8.4 and 7.6 with an included angle of 82 degrees. Find the length of the third side to three significant digits. \n" ); document.write( "
Algebra.Com's Answer #756168 by Boreal(15235)\"\" \"About 
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Law of Cosines
\n" ); document.write( "c^2=a^2+b^2-2ab cos C
\n" ); document.write( "=128.32-2(8.4)(7.6)cos 82
\n" ); document.write( "=128.32-17.77
\n" ); document.write( "=110.55
\n" ); document.write( "a=10.51 or 10.5
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