document.write( "Question 234082: what does it mean to refer to a 20-in TV set or a 25-in TV set? Such units refer to the diagonal of the screen. A 15-in TV set also has a width of 12 inches. What is its height? What is the height of a 15-in TV? \n" ); document.write( "

Algebra.Com's Answer #172663 by eggsarecool(46) $\"\"$ $\"About$

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This problem is done using the Pythagoran theorem. Which says that $\"a%5E2%2Bb%5E2=c%5E2\"$
\n" ); document.write( "This says that the two shorter sides of a right triangle squared equal the long side squared
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\n" ); document.write( "And the triangles longest side is the diagnol line across the tv set.
\n" ); document.write( "So we know the diagnol of the tv is 15, so $\"c=15\"$
\n" ); document.write( "And we know the leangth is 12 so $\"a=12\"$
\n" ); document.write( "This gives you that $\"15%5E2=12%5E2%2Bb%5E2\"$
\n" ); document.write( " $\"225-144=b%5E2\"$
\n" ); document.write( " $\"b%5E2=81\"$
\n" ); document.write( " $\"b=9\"$
\n" ); document.write( "Since b is the height of your triangle the height is 9. \n" ); document.write( "

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