document.write( "Question 1065916: In the △PQR, PQ = 39 in, PR = 17 in, and the altitude PN = 15 in. Find QR.\r
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Algebra.Com's Answer #681083 by ikleyn(52855) $\"\"$ $\"About$

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document.write( "Find two right-angled triangles.\r\n" );
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document.write( "For each of these two right-angled triangles you have given a hypotenuse and one of the two legs.\r\n" );
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document.write( "Apply the Pythagorean theorem and find the second leg for each of the two right-angled triangles.\r\n" );
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document.write( "Then two options are possible:\r\n" );
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document.write( "a) QR is the sum of lengths of these legs,   or\r\n" );
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document.write( "b) QR is the difference (if the original triangle is obtuse).\r\n" );
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