document.write( "Question 1125745: The sides of a parallelogram are 55 cm and 84cm. The smaller angle of the parallelogram is 42 degrees. Find the length of the longer diagonal. \n" ); document.write( "

Algebra.Com's Answer #742053 by ikleyn(52818) $\"\"$ $\"About$

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document.write( "1.  Make a sketch.\r\n" );
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document.write( "2.  Apply the law of cosines.\r\n" );
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document.write( "3.  Use the supplementary angle of 180-42 = 138 degrees as the angle between the given sides of the parallelogram.\r\n" );
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