document.write( "Question 193894: I have a problem that I need help on. AC=16m AB=?m angle of a is 45 degrees angle of c is 45 degrees. Multiple choice 16square2, 8square2, neither of these. Thank you. \n" ); document.write( "

Algebra.Com's Answer #145567 by vleith(2983) $\"\"$ $\"About$

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The triangle ABC has 2 45degree angles. That means the third angle (angle at c) is 90 degrees. Since two angles are equal, the sides opposite those angles are equal. Call their length L. You are told the hypotenuse is 16m\r
\n" ); document.write( "\n" ); document.write( "So use pythagorean theorem.\r
\n" ); document.write( "\n" ); document.write( " $\"c%5E2+=+a%5E2+%2B+b%5E2\"$
\n" ); document.write( " $\"16%5E2+=+L%5E2+%2B+L%5E2\"$
\n" ); document.write( " $\"256+=+2L%5E2\"$
\n" ); document.write( " $\"128+=+L%5E2\"$
\n" ); document.write( " $\"sqrt%28128%29+=+L\"$
\n" ); document.write( " $\"sqrt%2864%2A2%29+=+L\"$
\n" ); document.write( " $\"8%2Asqrt%282%29+=+L\"$ \n" ); document.write( "

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