document.write( "Question 1114003: Triangle ABC has AB= 7 cm, AC = 13, BC = x cm and angle ABC = 60 degrees. Calaculate the exact value of x \n" ); document.write( "

Algebra.Com's Answer #729025 by ikleyn(52781) $\"\"$ $\"About$

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document.write( " =  \r\n" );
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document.write( "169 = 49 + ,\r\n" );
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document.write( " = 0\r\n" );
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document.write( "(x-15)*(x+8) = 0\r\n" );
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document.write( "We are looking for the positive root, therefore, the only solution is x= 15.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Answer. x = 15.\r
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