document.write( "Question 104134: The diagonal of a rectangle forms a 30 degree with one side of the rectangle. If the diagonal has measure 10, what is the area of the rectangle? \n" ); document.write( "
Algebra.Com's Answer #75854 by edjones(8007)![]() ![]() You can put this solution on YOUR website! The diagonal of the rectangle is the hypotenuse of a 30-60-90 degree triangle. \n" ); document.write( "h=10 \n" ); document.write( "sin(30)=opp/10 \n" ); document.write( "opp=sin(30)*10=5 \n" ); document.write( ". \n" ); document.write( "cos(30)=adj/10 \n" ); document.write( "adj=cos(30)*10=8.66... \n" ); document.write( ". \n" ); document.write( "A=5*8.66...=43.3013 sq units \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " \n" ); document.write( " |