document.write( "Question 264601: How would you find the length of two equal sides of an isosceles triangle, when it's hypotenuse is 15 cm long? \n" ); document.write( "

Algebra.Com's Answer #194806 by JBarnum(2146) $\"\"$ $\"About$

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in a triangle where sides A and B are not the
\n" ); document.write( "Hypotenuse and C is the Hypotenuse, then the following formula is used:
\n" ); document.write( " $\"A%5E2%2BB%5E2=C%5E2\"$
\n" ); document.write( "since we know that A=B this is also true:
\n" ); document.write( " $\"A%5E2%2BA%5E2=C%5E2\"$
\n" ); document.write( " $\"%282%29A%5E2=C%5E2\"$
\n" ); document.write( "C=15 so
\n" ); document.write( " $\"C%5E2=15%5E2=225\"$
\n" ); document.write( " $\"%282%29A%5E2=225\"$
\n" ); document.write( " $\"%28%282%29A%5E2%29%2F2=225%2F2\"$
\n" ); document.write( " $\"A%5E2=112.5\"$
\n" ); document.write( " $\"sqrt%28A%5E2%29=sqrt%28112.5%29\"$
\n" ); document.write( " $\"A=sqrt%28112.5%29\"$
\n" ); document.write( " $\"B=sqrt%28112.5%29\"$
\n" ); document.write( "Checking answer:
\n" ); document.write( " $\"sqrt%28112.5%29%5E2%2Bsqrt%28112.5%29%5E2=225\"$
\n" ); document.write( " $\"225=225\"$
\n" ); document.write( " $\"C%5E2=225\"$
\n" ); document.write( " $\"sqrt%28C%5E2%29=sqrt%28225%29\"$
\n" ); document.write( " $\"C=15\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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