document.write( "Question 490486: Explain how the Pythagorean Theorem is a special case of the Law of Cosines. \n" ); document.write( "
Algebra.Com's Answer #334108 by richard1234(7193)\"\" \"About 
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The law of cosines says that\r
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\n" ); document.write( "\n" ); document.write( "where theta is the angle opposite c. Replace theta with 90 degrees, and you have the Pythagorean theorem (cos 90 = 0).
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