document.write( "Question 1011750: If X = 27 inches, Y = 120 inches, and Z = 123 inches, what is the cosine of angle B?
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Algebra.Com's Answer #627493 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "We check to see if it is a right triangle by\r\n" );
document.write( "the Pythagorean theorem.\r\n" );
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document.write( "    X² + Y² ?=? Z²\r\n" );
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document.write( " 27² + 120² ?=? 123²\r\n" );
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document.write( "729 + 14400 ?=? 15129\r\n" );
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document.write( "      15129  =  15129\r\n" );
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document.write( "So yes it is a right triangle.  Therefore,\r\n" );
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document.write( "longest side = hypotenuse = Z = 123 inches\r\n" );
document.write( "side opposite A = X = side adjacent angle B = 27 inches\r\n" );
document.write( "side opposite B = Y = side adjacent angle A = 120 inches\r\n" );
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document.write( "  \r\n" );
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document.write( "Edwin
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