document.write( "Question 1059155: Determine $\"+AB+\"$ to $\"+1+\"$ decimal place
\n" ); document.write( "In the image below, m∠DAC = 42° , m∠DBC = 52° , m∠DCA = 90° , and BC = 8 units.
\n" ); document.write( "https://s15.postimg.org/ihdgxa2i3/figure_rabc.png
\n" ); document.write( "A.) $\"+4+\"$
\n" ); document.write( "B.) $\"+4.2+\"$
\n" ); document.write( "C.) $\"+3.4+\"$
\n" ); document.write( "D.) $\"+3.8+\"$ \n" ); document.write( "

Algebra.Com's Answer #674278 by Boreal(15235) $\"\"$ $\"About$

You can put this solution on YOUR website!
tan 52=x/8, so x=8 tan 52=10.24
\n" ); document.write( "tan 42=x/(8+y), where y is AB. But x=10.24
\n" ); document.write( "Therefore, 8+y=x/tan 42
\n" ); document.write( "8+y=11.37
\n" ); document.write( "y=3.37, round to 3.4
\n" ); document.write( "C \n" ); document.write( "

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