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)![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( " |